Hidden Details About Hearts2Hearts Members: Ages, Skills & Stories

K-pop fans worldwide experienced a major shakeup when Hearts2Hearts burst onto the scene, causing SM Entertainment's stock to jump impressively by 4.5% on the Korea Exchange, followed by an additional 6.94% gain the next day.

After a five-year hiatus since Aespa's debut in 2020, this new K-pop girl group officially debuted on February 24, 2025, with their first single album "The Chase". Hearts2Hearts consists of eight talented members: Jiwoo, Carmen, Yuha, Stella, Juun, A-na, Ian, and Ye-on, making them SM's largest girl group since Girls' Generation launched with nine members back in 2007. Furthermore, the group has already secured one music show win, signaling a promising start for these fresh faces. With Carmen making history as the first Indonesian idol to debut under SM Entertainment, Hearts2Hearts isn't just another K-pop group – they're breaking new ground while carrying the legacy of one of Korea's most prestigious entertainment companies.

Jiwoo – Ballet Roots and Leadership

As the leader of Hearts2Hearts, Jiwoo brings both elegance and determination to the group. Her journey from ballet studios to K-pop stages showcases a remarkable dedication that has positioned her as a pivotal figure in SM Entertainment's newest girl group sensation.

Jiwoo age and early life

Born Choi Ji-woo on September 7, 2006, Jiwoo is currently 18 years old. She hails from Godeok-dong in Gangdong-gu, Seoul, South Korea. Her early education began at Seoul Myogok Elementary School before she transferred to Seoul Daemyeong Elementary School and later attended Hanyoung Middle School.

Notably, Jiwoo's artistic journey started long before her K-pop career. She trained as a ballerina for approximately six to seven years, beginning at the tender age of six. This classical dance background has significantly influenced her performance style, providing her with exceptional flexibility and elegant dance lines.

Her path to stardom took an unexpected turn during her elementary school years. SM Entertainment scouts discovered Jiwoo at a convenience store during her 6th grade year. At her first audition, she impressively sang South Korea's national anthem. Subsequently, Jiwoo embarked on a lengthy training period lasting approximately 6 years and 3 months before officially debuting with Hearts2Hearts.

Jiwoo leadership style

Despite being relatively young, Jiwoo carries the responsibility of leading Hearts2Hearts with a mature approach. Standing at 169 cm (5'7"), her striking short-haired visual helps her stand out among the members.

Although typically described as "very shy", Jiwoo balances this natural tendency with her leadership duties. Her extensive training period—among the longest in the group—provides her with valuable experience that benefits the entire team.

Her ballet background significantly influences her leadership approach, bringing discipline and precision to the group's performances. With her dance expertise, she plays a key role in shaping Hearts2Hearts' artistic direction. Additionally, Jiwoo identifies herself as both the "Handsome and Pretty" member of the group, reflecting her unique dual charm that resonates with fans.

Jiwoo fun facts

Beyond her role as leader, Jiwoo possesses numerous interesting quirks and preferences:

Her representative emoji is the strawberry (🍓), reflecting her favorite fruit
Her MBTI personality type is ISTJ
She has an older brother born in 2004
Her favorite colors are navy and deep green
She prefers tea over coffee and theme parks over museums
Her hobbies include watching cartoons and traveling
She has an affinity for desserts, particularly strawberry gelato
If given a superpower, she would choose chronokinesis—the ability to manipulate time
She has a pet dog named Kong
Her nicknames include "Mychuu" and "Cherry"
Her special skill is performing Japanese tongue-twisters
She is Catholic, with the baptismal name Stella
Her role model is aespa's Karina

As a former ballerina with a six-year training period, Jiwoo brings a wealth of experience to Hearts2Hearts. Her transition from classical dance to K-pop demonstrates her versatility as a performer. Despite her naturally shy personality, she embraces her leadership position with grace and determination, establishing herself as a foundational member of this promising new girl group.

Carmen – Breaking Barriers from Bali

Breaking cultural barriers in the K-pop industry, Carmen stands as a groundbreaking member of Hearts2Hearts, making history as the first Indonesian idol to debut under SM Entertainment. Her journey from Bali to Seoul represents the increasingly global reach of K-pop and demonstrates SM's commitment to diversity in their newest girl group.

Carmen age and nationality

Born Nyoman Ayu Carmenita on March 28, 2006, Carmen is currently 18 years old. She hails from Denpasar, Bali, Indonesia, bringing unique cultural representation to the K-pop scene. Carmen comes from a creative family—her father Putu Gede Suastika and her mother Ayu Handayani (an Indonesian singer) raised her in an artistic environment. She has three siblings: an older sister born in 2000, an older brother born in 2003, and a younger brother born in 2007.

Carmen's family owns both a multi-arts studio and a restaurant in Bali, which explains her early exposure to various creative disciplines. Regarding her education, she attended SMA Kristen Harapan before eventually dropping out and completing her studies through online schooling. Carmen practices Balinese Hinduism, further enriching the cultural diversity within Hearts2Hearts.

Carmen audition journey

Carmen's path to K-pop stardom began with an unexpected source of inspiration. "I've loved singing since I was young, and when I saw Girls' Generation perform 'The Boys' on TV, I was amazed. I wanted to be like them, so I auditioned," she revealed in an interview. This watershed moment would change the course of her life.

At her first SM Entertainment audition, Carmen impressively performed "Best Part" by Daniel Caesar. However, her road to acceptance wasn't immediate—she reportedly sang approximately 100 songs before finally passing the SM audition and earning her ticket to Korea. Interestingly, Carmen didn't initially tell her parents about the audition until after she had passed.

Carmen joined SM Entertainment sometime in 2022 and underwent a training period of approximately 2 years before debuting with Hearts2Hearts. This transition meant swapping the "super chill vibes" of Bali for the intense energy of Seoul's music scene. Her training regimen was comprehensive, including vocal lessons, dance training for hours, and Korean language studies—all while already being fluent in Indonesian and English.

Carmen vocal strengths

Carmen has quickly established herself as one of the strongest vocalists in Hearts2Hearts. Her vocal versatility allows her to deliver both powerful performances and emotional depth. As observed in behind-the-scenes recording footage, Carmen showcases remarkable vocal control and expressiveness.

Her multilingual abilities enhance her vocal performance—she fluently speaks Indonesian, English, and Korean. This linguistic versatility gives her an advantage when interpreting songs with different emotional nuances.

Carmen's vocal talent is strategically highlighted in Hearts2Hearts' music. According to fan observations, SM Entertainment deliberately showcases her range across their discography: "The title track [The Chase] high energy... and the ballad [Butterflies] Carmen's emotional depth". This dual approach demonstrates her adaptability as a performer.

Beyond her vocal abilities, Carmen brings a distinctively bright energy to the group, earning her nicknames like:

Bali Girl
Joy
Happy Virus
Kappeumi
Lemen

Her representative emoji is the palm tree (🌴), reflecting her island heritage. Carmen's hobbies include baking and cooking, skills potentially influenced by her family's restaurant business. With her unique background, vocal talents, and positive personality, Carmen has quickly become an essential component of Hearts2Hearts' appeal, breaking barriers as she builds her career in K-pop.

Yuha – The Tone Fairy with Perfect Pitch

Known as the "Tone Fairy" within Hearts2Hearts, Yuha possesses exceptional musical abilities that set her apart. Her perfect pitch and extensive training background have established her as one of the group's most technically skilled members.

Yuha age and training

Born Yu Ha-ram on April 12, 2007, in Wonju, Gangwon-do, South Korea, Yuha is currently 17 years old. She belongs to a family consisting of her parents, a twin sister (whom she is older than by just 2 minutes), and a younger sister born in 2013.

Her path to becoming an idol began when SM Entertainment staff discovered her outside her school. Yuha subsequently underwent an impressive 7-year training period before debuting with Hearts2Hearts. This makes her the member with the longest training experience in the group. Throughout this time, she trained alongside the members of aespa.

For her first audition, Yuha performed "Love is an Open Door" from the Disney movie Frozen, showcasing both her vocal abilities and her fondness for Disney content. Regarding her education, she attended Bangok Elementary School and then Bangok Middle School.

Yuha musical talents

Yuha's most remarkable musical gift is her perfect pitch ability, which allows her to identify or produce any given musical note without a reference tone. This rare talent earned her the nickname "Tone Fairy" within the group.

Alongside her vocal prowess, Yuha is an accomplished pianist. Her skills were recognized early when she won the piano section of the fourth Chuncheon City National Music Competition. She continues to incorporate her piano playing into her performances with Hearts2Hearts.

Yuha considers herself the "All-Rounder" of the group, citing her pretty voice and powerful dance abilities as her main charms. Interestingly, she possesses several unique talents that complement her musical abilities:

Speaking backwards with remarkable fluency
Singing with exceptional tone control
Performing with both vocal power and technical precision

Yuha personality

Characterized by her bright and positive disposition, Yuha brings a refreshing energy to Hearts2Hearts. Her MBTI personality type is INTJ, suggesting she combines analytical thinking with creative vision.

Yuha often gets told she resembles a rabbit, which has become part of her identity within the fandom. Her representative emoji is the ribbon (🎀), reflecting her feminine yet distinctive presence in the group.

In an interview with Dazed Korea, Yuha revealed a meaningful memory: "The one memory that stands out the most is when we were filming the music video during a very cold winter. There were many scenes where we had to run together, and despite the freezing cold, I was so happy in that moment that I completely forgot about the chill".

Regarding her aspirations, Yuha hopes to be remembered as "a sincere artist who works on everything and treats her fans with sincerity". This dedication was evident in her message to her future self: "I hope you'll continue to be an artist who works hard and never loses the mindset and original intention you had when you first debuted".

Stella – Bilingual Beauty and Musician

Stella's multicultural background and musical versatility make her a standout member of Hearts2Hearts, bringing a unique blend of Korean and Canadian influences to the group's dynamic.

Stella age and background

Born Kim Da-hyun on June 18, 2007, Stella is currently 17 years old. Originally from Ulsan, South Korea, her family relocated to Vancouver, British Columbia, Canada when she was just 4-5 years old. This early international exposure helped her develop fluency in both Korean and English.

Stella comes from a close-knit family consisting of her parents and an older brother born in 2002. After spending significant time in Canada, her family eventually returned to South Korea, settling in Busan. There, she attended the Music Doctor Academy in Busan to develop her artistic talents.

Her training journey began impressively—at an in-house audition held by Music Doctor Academy, Stella was cast by 32 out of 62 agencies. For her first SM Entertainment audition, she sang "Like A Dream" by Chrisette Michele. After approximately 2 years of training, she joined Hearts2Hearts, leaving her studies at the International School of Busan.

Stella instrumental skills

Uniquely among the members, Stella possesses remarkable instrumental versatility. She is a skilled multi-instrumentalist who primarily plays three instruments: acoustic guitar, bass guitar, and drums. These abilities were developed through her participation in her school's concert and jazz band.

As a left-handed musician, Stella brings a distinctive approach to her instrumental performances. Her musical journey began after watching Girls' Generation's "Gee" music video, which inspired her dream of becoming a K-pop idol.

In fact, her musical capabilities extend beyond just performing—she served as the English narrator for the group's debut trailer, showcasing her bilingual skills in a professional capacity.

Stella personal quirks

Behind her polished stage presence, Stella possesses numerous endearing qualities. Although she may seem shy and cold initially, she is actually quite charming and playful once you get to know her.

Her nickname "Pink Princess" stems from her favorite color being pink. Moreover, Stella has several other affectionate nicknames including:

Tteokbokki
Gorgeous Squid
Telnyangi
Tonyangi

Stella's culinary talents are noteworthy—she is a talented cook whose signature dish is sweet potatoes, which groupmate Juun described as "her new obsession". Surprisingly, she has a remarkable ability to sleep anywhere, even sitting up.

Her representative emoji is the cupcake (🧁), reflecting her love for desserts, especially cupcakes, cheesecake, and tiramisu. Additionally, she enjoys playing cute video games, with Minecraft and Animal Crossing: New Horizons being her favorites. Coupled with her musical talents, she was also part of her school's skiing and snowboarding club, demonstrating her well-rounded interests beyond music.

Juun – Dance Prodigy with a Husky Voice

With exceptional dance skills honed through years of competition, Juun brings distinctive performance abilities and a unique husky voice to Hearts2Hearts. Her precise movements and charming personality quickly captured fans' attention following the group's debut.

Juun age and dance history

Born Kim Joo-run on December 3, 2008, in Ocheon-ri, Majangmyeon, Gyeonggi-do, South Korea, Juun is currently 16 years old. She grew up as the second child in her family, with an older brother born in 2006. Consequently, she discovered her passion for dance at an early age, attending various dance schools throughout her elementary and middle school years.

Prior to joining SM Entertainment, Juun actively participated in dance competitions where she won several awards. This strong foundation led to her recognition as "the best dancer out of the trainees" during her pre-debut period. Following her first audition where she sang Lee Hi's "Holo", Juun trained intensively for approximately 4-5 years before officially debuting with Hearts2Hearts.

Juun special talents

Undoubtedly, Juun's most remarkable special skill is her ability to imitate NPC characters. This unique talent showcases her creativity and adaptability. Besides her impressive dance abilities, Juun possesses a distinctive husky voice that adds depth to Hearts2Hearts' vocal color.

Her versatility extends beyond dancing—she enjoys creating choreography. Whenever asked about her role in the group, Juun confidently refers to herself as the "Super Cutie" of Hearts2Hearts.

Juun fun facts

Behind her talented performer image, Juun has numerous endearing quirks:

She loves Studio Ghibli movies and is a Harry Potter fan, identifying with Slytherin house
Her representative emoji is the purple alien (👾)
She considers BoA and Red Velvet's Seulgi as her role models
Her favorite Red Velvet song is "Psycho"
She has a fear of planes and flying

Regarding her personal preferences, Juun enjoys grapefruit honey black tea as her favorite drink. Similarly, she has a sweet tooth, with ice cream being her favorite snack and watermelon her preferred fruit. Her essential items typically include her hat and glasses.

Primarily, Juun describes the charm of Hearts2Hearts as their strong friendship and relationship. Interestingly, if given the chance to swap places with any member for a day, she would choose the group's leader, Jiwoo. Her personal hashtag would be "#fluffysofttofu", reflecting her soft and charming personality.

A-na – Visual Queen and Energetic MC

Recognized as the visual standout of Hearts2Hearts, A-na quickly distinguished herself not only through her striking appearance but by securing a prestigious MC role immediately following the group's debut—a rare achievement in the competitive K-pop industry.

A-na age and visuals

Born Roh Yu-na on December 20, 2008, in Yeongtong-gu, Suwon, Gyeonggi-do, South Korea, A-na is currently 16 years old. Standing at 169-170 cm (5'7"), she holds the distinction of being the tallest member in Hearts2Hearts. Her statuesque height complements her official position as the group's designated visual, earning praise for her "exotic visual and distinctive aura" that makes her "adept at pulling off unique concepts".

A-na joined SM Entertainment on October 16, 2022—just one day after her bandmate Ian. Remarkably, she underwent a relatively brief training period of 3-4 years before her official reveal as a Hearts2Hearts member on February 3, 2025. Her representative emoji is the sunflower (🌻) , symbolizing her bright presence within the group.

A-na MC experience

Most notably, on February 10, 2025—two weeks before Hearts2Hearts' official debut—A-na was announced as a new MC for MBC's Show! Music Core alongside ZEROBASEONE's Kim Gyu Vin and TWS's Dohoon. Her first broadcast in this role took place on March 1, 2025.

This appointment made history in several ways. First, she secured this fixed MC position just five days after her debut as an idol. Indeed, it is exceptionally rare for a newly-debuted K-pop girl group member to both perform their debut stage and be introduced as a new MC on the same show. Together with her co-hosts, A-na became part of what industry observers called "the youngest MC lineup in history" for Show! Music Core.

A-na personality

Despite her striking visuals, A-na's personality reveals unexpected depths. She identifies herself as the "Firecracker" of Hearts2Hearts and serves as "the source of energy, height, and unexpected gags" in the group.

Her MBTI personality type is INFJ. In interviews, A-na describes herself as having layers "like an onion"—potentially seeming cold initially but revealing a warmer, puppy-like personality once you get to know her. Nonetheless, she admits to being emotionally expressive, reportedly crying the easiest among all Hearts2Hearts members, especially when angry.

Apart from her professional achievements, A-na maintains several personal interests. She attends Heungdeok Middle School, loves watermelon (once stating she "could live her whole life only eating watermelon" ), and has a pet dog named Aegi. Her personal hashtags would be "#quirky" and "#goldenretriever", perfectly capturing her unique charm within Hearts2Hearts.

Ian – The Comedic Center of the Group

Bringing laughter and energy to Hearts2Hearts, Ian stands out as the group's designated comedian whose infectious humor creates a warm atmosphere for both members and fans alike.

Ian age and casting

Born Jeong Lee-an on October 9, 2009, in Hyehwa-dong, Jongno-gu, Seoul, South Korea, Ian is currently 15 years old. As of 2025, she holds the distinction of being the first idol born in 2009 to debut under SM Entertainment. Her casting story is particularly remarkable—she was scouted through an Instagram direct message, which initially seemed suspicious. Fortunately, her parents, who were fans of SM Entertainment, cleverly verified the company's authenticity by asking about its location. Upon confirming it was in Seongdong-gu, they encouraged Ian to proceed with the camera test. This makes Ian the fourth SM Entertainment artist discovered through DM casting, following Karina of aespa, Wonbin of RIIZE, and Sion of NCT.

Ian mood-maker role

Affectionately dubbed "Jung Dopamine", Ian embodies her life motto: "Good fortune comes to those who laugh". Her members frequently describe her as bright and mischievous, noting that time spent with her is always enjoyable. Originally, when members first met her, they observed a calm demeanor, yet as relationships developed, her playful nature emerged. In one memorable instance during a recording session, everyone felt awkward until Ian made a funny face, causing everyone to burst into laughter. She openly acknowledges her position as the group's comedian, consistently adding lighthearted moments to the team dynamic.

Ian fun facts

Beyond her comedic abilities, Ian possesses several interesting quirks:

She once consumed so many tangerines that her body turned yellow, earning her the nickname "Tangerine Ian"
Her favorite colors are white and purple
She can impressively tie her hair in a bun in just three seconds
Ian's representative emoji is the pea (🫛), which she believes represents her multifaceted charm
She is Catholic with the baptismal name Joelah
As a former child model, she joined SM Entertainment on October 15, 2022
Ian is a devoted fan of NCT, with Jaehyun being her bias

Ye-on – The Youngest with Big Dreams

At just 15 years old, Ye-on holds the distinction of being not only the youngest member (maknae) of Hearts2Hearts but currently the youngest idol under SM Entertainment as of 2025. Born Kim Na-yeon on April 19, 2010, she brings youthful energy and remarkable talent to the group despite her tender age.

Ye-on age and debut

Hailing from Yangsan, Gyeongsangnam-do, South Korea, Ye-on is her parents' only child. Her journey into the entertainment world began remarkably early—she started singing when she was merely 5-6 years old. Throughout her childhood, she attended Josam Elementary School and briefly Yangju Middle School before leaving formal education to pursue her idol career.

Ye-on's path to stardom took a decisive turn when SM Entertainment discovered her through DM casting while she was in 6th grade. For her first audition, she impressively performed "Price Tag" by Jessie J. After approximately two years of training, she officially debuted with Hearts2Hearts on February 24, 2025, through their first single album "The Chase".

Ye-on musical theater skills

Among her talents, Ye-on particularly excels in musical theater. This specialty sets her apart within the group and gives her performances a distinctive theatrical quality. Her captivating vocals have earned recognition from fans and critics alike, with many noting her contributions to Hearts2Hearts' sound.

Ye-on personality

Perhaps Ye-on's most charming attribute is her eye smile, which she proudly acknowledges: "I'm really good at making eye smiles. Whenever the sisters see me doing it, they always react brightly and tell me I'm cute. I think that's one of my charming points".

Fittingly, her representative emoji is the smiley face (😊), reflecting her bright personality. She introduces herself as the "Cutie" of Hearts2Hearts, a role she embraces wholeheartedly. Outside of performing, Ye-on enjoys listening to music (particularly ballads) and considers herself a morning person.

Interestingly, her stage name combines the characters for "talent" and "accumulation", suggesting the continuous growth and potential that lies ahead for this promising young artist.

Hearts2Hearts Debut Date and Concept

After long anticipation, SM Entertainment's newest girl group finally made their mark on the K-pop landscape. The journey to Hearts2Hearts' debut proved to be one filled with unexpected twists and strategic timing decisions.

Debut timeline

Originally announced in SM's corporate strategy presentation on February 3, 2023, Hearts2Hearts was slated to debut in the fourth quarter of 2023. Nevertheless, the group's launch underwent multiple postponements, with each delay being documented in the company's earnings reports. The first reschedule occurred in August 2023, shifting their debut to the first half of 2024. Subsequently, in May 2024, SM pushed the launch back to the fourth quarter. The final adjustment came in November 2024, setting their debut for the first quarter of 2025.

The official reveal took place on January 12, 2025, through a surprise trailer at the SM Town Live 2025 concert at Gocheok Sky Dome. Though this initial preview showed all eight members, their individual names remained undisclosed. Throughout this period, the public anticipation translated into tangible business impact—following the group's reveal, SM Entertainment's stock experienced a 4.5% increase on the Korea Exchange, with an additional 6.94% gain the next day.

Concept of 'The Chase'

Hearts2Hearts officially debuted on February 24, 2025, with their first single album appropriately titled The Chase. This release featured two songs: the lead single sharing the album name and a B-side called "Butterflies". Interestingly, the debut showcase occurred at Yes24 Music Hall in Seoul on the same day as the album release.

The title track "The Chase" draws inspiration from Lewis Carroll's Alice in Wonderland, featuring "dynamic progression underpinned by bass synth". Written, composed, and arranged by veteran SM songwriter Kenzie, with additional contributions from Lauren Faith and No2zcat, the song's lyrics convey "a confident message about forging one's own path, along with the excitement and curiosity of exploring a new world".

The group's overall concept centers on creating connections with fans through what SM describes as their own "mysterious and beautiful musical world". Hence, the name Hearts2Hearts represents their mission to "connect with global fans through a magical and beautiful musical world filled with heartfelt emotions and genuine messages".

The Hidden Message in 'Chase Your Choice'

Beyond merely introducing the members, Hearts2Hearts' debut trailer "Chase Your Choice" presents a richly layered philosophical perspective on destiny and personal choice. The visual narrative serves as a window into the group's artistic core identity rather than just a promotional tool.

Trailer symbolism

The dreamy teaser trailer introduces viewers to an intricate web of visual metaphors. Throughout the footage, cryptic text appears, including phrases like "What's your map?", "E.O.D", and the particularly significant "If the path fades, carve your own way." These words don't simply function as esthetic elements but instead establish the conceptual foundation of Hearts2Hearts' artistic identity. Markedly, the members pose a central question: "If there is a map that's just for you, where would our path be leading us?" This contemplative inquiry frames their artistic journey.

The visual language employed correspondingly reinforces these themes—scenes of the members doodling with crayons, playing hopscotch, and riding a school bus evoke carefree innocence. Yet these moments contrast with sophisticated cinematic techniques: timelapse shots of vehicles create a sense of constant motion, whereas traffic lights subtly reflect the weight of everyday decisions. The closing sequence, where the members run across a bridge toward a distant city skyline, visually manifests their collective journey toward an uncertain yet hopeful future.

Themes of destiny and choice

First and foremost, the trailer's philosophical underpinnings draw inspiration from the concept of the butterfly effect—how seemingly minor decisions can profoundly alter one's trajectory. This theme resonates throughout "The Chase," whose lyrics convey a confident message about forging one's own path alongside the excitement of exploring uncharted territory. The imaginative storytelling and poetic lyricism intentionally reinterpret "Alice in Wonderland" to match Hearts2Hearts' unique style, as explained by member Jiwoo herself.

The line "Sparkle Sparkle" in "The Chase" epitomizes this enchanting mood, as scenes of the members seemingly floating blur the boundaries between imagination and reality. Through these dreamy visuals and symbolic language, Hearts2Hearts invites viewers to contemplate their own paths and choices—establishing a deeper connection with fans beyond typical K-pop esthetics.

Fandom Name S2U and Its Meaning

The relationship between K-pop groups and their dedicated followers reaches new dimensions through carefully crafted fandom names. For Hearts2Hearts, this bond manifests through "S2U," a designation carrying both symbolic meaning and phonetic charm.

Fan participation

The creation of Hearts2Hearts' fandom identity began with active fan involvement. On February 4, 2025, the official Hearts2Hearts Twitter account announced recruitment for their fandom name, inviting fans to submit suggestions via Google docs. This participatory process lasted until February 11, 2025, giving enthusiasts worldwide a chance to contribute to the group's legacy. Shortly afterward, anticipation built as fans awaited the official announcement.

The revelation finally came during Hearts2Hearts' debut showcase on February 24, 2025, at YES24 Live Hall, where "S2U" was unveiled as their official fandom name. Pronounced "Ha-Chu," this designation immediately sparked conversations among fans and industry observers alike. Following the announcement, social media buzzed with reactions ranging from excitement to nostalgic comparisons.

Emotional meaning

S2U combines elegant symbolism with heartfelt significance. Essentially, the name unites the heart-shaped "S2" from the center of the group's name "Hearts2Hearts" with "U" (representing "You"). This thoughtful combination conveys that "fans will always be at the center of the group" and that "Hearts2Hearts and fans will always be by each other's side."

The pronunciation "Ha-Chu" evoked mixed reactions among Korean netizens, primarily because it reminded many of a popular Korean animation character named "Ha-Chu Ping" or "Heart Ping." Some commenters noted potential search difficulties: "The Google search is going to be hard since when you type in 하츄 (Ha Chu) the character Ha-Chu Ping pops up." Nonetheless, most responses remained positive, with fans describing the name as "adorable," "cute," and "a good fandom name."

Currently, anyone who loves Hearts2Hearts can register for S2U membership through the group's Weverse Global Shop, creating an official community for supporters of this promising new act.