hrtz.wav is an upcoming five-member Korean boy band formed on the survival show STEAL HEART CLUB. The group members consist of Hagiwa, Dane, Keitan, Riaan, and Youn Youngjun. Their debut is unknown.
hrtz.wav Profile
| Debut | N/A |
| Active Years | 2025-present |
| hrtz.wav Members | Hagiwa, Dane, Keitan, Riaan, Youn Youngjun |
| Genre | N/A |
| Status | Pre-debut |
| Label | N/A |
| Oldest Member | Youn Youngjun |
| Youngest Member | Hagiwa |
| Former Member | N/A |
| Fandom Name | N/A |
hrtz.wav Facts:
– The group was formed on the survival show STEAL HEART CLUB.
SOCIAL MEDIA HANDLES
Instagram: hrtzwav
Youtube: @hrtzwav
Twitter: hrtzwav
TikTok: @hrtzwav
hrtz.wav Members Profile
1. Youn Youngjun

| Stage Name | YYJ |
| Birth Name | Yoon/ Youn Young-jun (윤영준) |
| Position | Pianist |
| Birthday | March 21, 2000 |
| Active Years | 2025-present |
| Age | 25 (in 2026) |
| Zodiac Sign | Aries |
| Height | N/A |
| Weight | N/A |
| Nationality | Korean |
| Blood Type | N/A |
| MBTI | INFP (previously INTJ) |
Youn Youngjun Facts:
– Youngjun’s musical background is as a DJ.
– He was born in Suwon, Gyeonggi-do, South Korea, and moved to Ansan when he was 3 years old.
– He is currently active as a DJ under WAY BETTER, using the stage name YYJ.
– He played piano for the OST “Meet Garfield” in The Garfield Movie.
– He is a former member of NND (2024-2025).
– He originally trained to become a professional pianist, but after his teacher suggested joining a band, he auditioned and became part of one, where he met future NND member DAYN.
– After the band’s debut plans fell apart, DAYN introduced him to the CEO of TAKIEL Inc., where Youngjun worked as an office employee.
– His favorite color is black.
– He often says “ahh” and “uhh” when he speaks.
– If he had to compare himself to an animal, he would choose a meerkat.
– Youn Youngjun is the oldest member in hrtz.wav.
– He was part of a band during his high school years.
– NND member DAYN describes him as caring, warm, and someone who is easy to love.
– The artists that match his ideal musical style are Valley and The 1965.
– He wrote and composed every song on NND’s debut album Wonder, I, which marked his first time songwriting.
– His favorite food is spicy stir-fried chicken.
– While working as staff at a Fujii Kaze concert, he felt inspired to make music again, contacted DAYN, and this led to the formation of NND.
– His Chinese zodiac sign is Dragon.
– His hobbies include gaming (especially League of Legends), listening to pop music, and sleeping. He said he can sleep all day if given the chance.
– His biggest stage weapon is his natural presence.
– His goals include performing at Coachella and being nominated for the Korean Music Awards someday.
– He played keyboard on “Marionette” by Jungmo (former TraxX member), appeared in its music video, and also performed for JeA’s cover of IU’s “Love Wins All.”
– His charm lies in his shy personality, calm demeanor, and how easily he laughs.
– His on-stage “heart rate” is 120-130 BPM, which is also his favorite tempo.
– He wants to be a musician who draws people in and gives off positive energy.
– His final message to be remembered by is: “I’m here to steal your heart, so watch out.”
– His determination: “I’ll work hard so that the support and love people give me is never wasted.”
SOCIAL MEDIA HANDLES
Instagram: @youn9wns
2. Riaan

| Stage Name | Riaan (리안) |
| Birth Name | Riaan Yoon (리안윤) |
| Position | Vocalist |
| Birthday | January 16, 2003 |
| Active Years | 2025-present |
| Age | 22 (in 2026) |
| Zodiac Sign | Capricorn |
| Height | N/A |
| Weight | N/A |
| Nationality | Korean |
| Blood Type | N/A |
| MBTI | INFJ |
Riaan Facts:
– Riaan is a singer-songwriter.
– He made his solo debut on July 30, 2024, with the song “Treat Me Better.”
– He trained at SM Entertainment from 2021 to 2022.
– He is under Nostalgiaa Records.
– His Chinese zodiac sign is Horse.
– He speaks both Korean and English fluently.
– The artists that influence his style include The 1975, Keshi, Janne Da Arc, and Official Hige Dandism.
– He became interested in music after watching live performances on TV, especially a Justin Bieber stage.
– He is close friends with Dane, NINE.i’s VAHN, and POLARIX’s Yang Donghwa.
– He can play both the guitar and the piano.
– His charm points are his voice, strong English skills, and smooth, rich vocals.
– He graduated from School of Performing Arts Seoul (Applied Music) and later attended Seoul Institute of the Arts (Vocal Performance).
– He wants to become a musician that others can look up to.
– His on-stage “heart rate” is 200 BPM, meaning he brings intense energy even before the performance begins.
– He wrote the songs “Magic!”, “She Said,” and “Selfie” for fellow contestant and labelmate Dane, and he writes the lyrics for all of his own music.
– His biggest strength on stage is delivering a complete and engaging performance from start to finish.
– His message to be remembered by is: “May my moment become your youth.”
– His determination: “The band boom and the RIAAN boom will definitely happen.”
SOCIAL MEDIA HANDLES
Instagram: @riaanyoon
X: @riaanyoon
TikTok: @riaanyoon
3. Dane

| Stage Name | Dane (데인) |
| Birth Name | N/A |
| Position | N/A |
| Birthday | July 20, 2004 |
| Active Years | 2025-present |
| Age | 21 (in 2026) |
| Zodiac Sign | Cancer |
| Height | N/A |
| Weight | N/A |
| Nationality | Korean |
| Blood Type | N/A |
| MBTI | ENTP |
Dane Facts:
– Dane is also a singer-songwriter.
– He was born in Seoul, South Korea.
– He made his solo debut on October 10, 2024, with the song “Selfie.”
– He writes, produces, and arranges all of his own music.
– He is under Nostalgiaa Records.
– His Chinese zodiac sign is Monkey.
– He trained at Kakao Entertainment from 2019 to 2021.
– He graduated from School of Performing Arts Seoul (Applied Music) and later attended Seokyeong University (Applied Music).
– He is close friends with Riaan, NINE.i’s VAHN, and POLARIX’s Yang Donghwa.
– He has appeared as a special guest performer at several of Gen Neo’s concerts.
– He plays multiple instruments, including guitar, keyboard, drums, and synthesizer.
– His charm points are his warm smile, deep voice, and ability to do everything musically.
– He is also confident in dancing.
– The artists that match his musical style are The 1975, Christian Kuria, and Keshi.
– He also composed and played instruments for Riaan’s songs “Ben & Jerry” and “Adore You.”
– He wants to be an artist who feels like a single, unforgettable moment of youth.
– He can speak Korean and English.
– His on-stage energy is described as 118 BPM, which is also the tempo of his song “She Said.”
– His secret weapon is his intense, sexy eye contact.
– His message to be remembered by: “Even if I’m not perfect, I hope I can deeply touch someone’s heart at least once.”
– His determination: “Music’s core is the bass. In <STEAL HEART CLUB>, I will become that core.”
SOCIAL MEDIA HANDLES
Instagram: @dane.youneed
X: @dane_youneed
TikTok: @dane.youneed
4. Keiten

| Stage Name | Keiten (케이텐) |
| Birth Name | Keiten Ishibashi (石橋啓天 / 케이텐 이시바시) |
| Position | Guitarist |
| Birthday | December 4, 2006 |
| Active Years | 2025-present |
| Age | 19 (in 2026) |
| Zodiac Sign | Sagittarius |
| Height | N/A |
| Weight | N/A |
| Nationality | Japanese |
| Blood Type | N/A |
| MBTI | INTJ |
Keiten Facts:
– Keiten is the guitarist of the Boston-based K-rock band Luvfiné (active since 2025).
– He was born in Tokyo, Japan.
– He discovered K-rock through his Korean friends at Berklee, who strongly influenced his musical style.
– He has a background in music as a major.
– He owns seven guitars, though he mainly plays only a few of them.
– He has been playing the guitar since 2023.
– He earned a scholarship to Berklee College of Music, majoring in Performance, but took a break from school to join the show.
– The artists that best match his musical style are DAY6, Måneskin, and Green Day.
– His favorite animal is the cheetah.
– He can also play the piano a little.
– His Chinese zodiac sign is Dog.
– He studied at MODERNK Academy.
– His favorite TV series is Brooklyn Nine-Nine.
– He believes his biggest charm is love.
– His favorite song is “Stop the Train” by John Mayer.
– His on-stage “heart rate” is described as π (3.14159) BPM.
– His favorite travel destination so far is Italy.
– The first song he learned on guitar was “Pride and Joy” by Stevie Ray Vaughan.
– He learned guitar through a mix of YouTube videos and formal lessons.
– His special strength on stage is his creative, out-of-the-box thinking.
– He can speak Japanese, English, and Korean.
– His favorite Korean band is DAY6.
– He wants to be a “1+1” type of musician (two great things combined, like cookies and cream).
– His final message to be remembered by is written in binary, which translates to “I love you.”
– His determination: “I play guitar so fast that even the future complains.”
SOCIAL MEDIA HANDLES
Instagram: @keiten.i
TikTok: @keiten.i
5. Hagiwa

| Stage Name | hagiwa (하기와/ ハギワ) |
| Birth Name | N/A |
| Position | Maknae, Drummer |
| Birthday | November 23, 2022 |
| Active Years | 2025-present |
| Age | 3 (in 2026) |
| Zodiac Sign | Sagittarius |
| Height | N/A |
| Weight | N/A |
| Nationality | Japanese |
| Blood Type | N/A |
| MBTI | ENFJ |
Hagiwa Facts:
– Hagiwa started out as an influencer before becoming a musician.
– He keeps his real name and age private and always appears with a mask and fictional persona.
– He wants to become a drummer who is also a full-on entertainer.
– His earlier mask was inspired by the game Poppy Playtime, and he changed to his current mask in 2024.
– The artists that best match his ideal style are G-Dragon and Queen.
– His Chinese zodiac sign is Tiger.
– When he’s on stage, he wants the energy to feel as fast and intense as 800 BPM.
– His biggest charm is his masked face.
– His signature move to win over the crowd is a heart-stealing wink.
– The message he wants people to remember him by is: “Let’s have fun together!”
– His determination: “You think my face looks scary? HAGIWA isn’t scary at all, I just want to play drums and have fun!”
SOCIAL MEDIA HANDLES
Instagram: @hagiwa_dr
Threads: @hagiwa_dr
TikTok: @hagiwa_dr
YouTube: ハギワ-hagiwa-

