Meet the rising J-pop group: One or Eight
- vassilikikonstadel
- Dec 6, 2025
- 7 min read
ONE OR EIGHT (一か八か), also stylized as 1OR8, is a 8-member Global-Based Japanese boy group under Avex Trax. They were formed on April 25, 2023 through the WARPs DIG – Battle Audition project, once the final lineup was announced the members trained until April 25, 2024. The group consists of Souma, Mizuki, Tsubasa, Reia, Ryota, Takeru, Yuga, and Neo. They released their first pre-debut song “KAWASAKI,” on June 20, 2024, and made their official debut on August 16, 2024, with the single “Don’t Tell Nobody”. On May 27, 2025, the group officially signed with the U.S. label Atlantic Music Group.
The group’s name ONE OR EIGHT is a reference to a Japanese phrase meaning “All or Nothing”. With the tagline “BET ON YOURSELF”.
The fandom's name is 1DERZ and it represents ONE OR EIGHT and their fans coming together as one, embracing bold risks to inspire and create a future beyond anything ever imagined. It conveys the group’s message that there are no limits when they are together with their fans.
ONE OR EIGHT Official Logo:
June - July 2024
July - November 2024
November 2024
Members:
Mizuki
Stage Name: Mizuki (水輝)
Birth Name: Kanai Mizuki (金井水輝)
Position(s): Rapper
Birthday: August 11, 1999
Zodiac Sign: Leo
Chinese Zodiac Sign: Rabbit
Height: 171 cm (5’7.3″)
Weight: 59 kg (130 lbs)
Blood Type: O
MBTI Type: ENFP
Nationality: Japanese
Representative Color: Light blue
Representative Emojis: 💧✨
Mizuki Facts:
He was born in Kanagawa, Japan.
He was the 7th member to be announced.
His skill is playing soccer.
His favorite foods are steak and hamburger.
He is the oldest member.
He joined a dance school in Yokohama when he was 15 years old.
Watching EXILE on TV inspired him to start dancing.
He often watches anime with Tsubasa.
He was a backup dancer for EXILE and Sandaime J Soul Brothers.
He is the father of the group.
He is right-handed.
He wants to try being a soccer commentator.
He prefers reading manga over watching anime.
He wants to do a solo live performance abroad.
He is known as “Wa’s dad” in the group.
Ryota
Stage Name: Ryota (亮太)
Birth Name: Imai Ryota (今井亮太)
Position(s): Main Dancer, Rapper
Birthday: December 18, 1999
Zodiac Sign: Sagittarius
Chinese Zodiac Sign: Rabbit
Height: 169 cm (5’6.5″)
Weight: 58 kg (127 lbs)
Blood Type: A
MBTI Type: ENTJ-T
Nationality: Japanese
Representative Color: Black
Representative Emojis: 🐩🃏
Ryota Facts:
He was born in Saitama, Japan.
He loves dogs.
He was the 2nd member to be announced.
His hobbies are training and eating horse sashimi while walking.
He’s good at breakdancing.
Ryota’s favorite dish is Piman Nikuzume (Stuffed Pepper).
Ryota’s favorite anime is Attack On Titan.
He used to be a backup dancer.
He has two sisters.
His favorite artists are BTS‘ Suga and Jimin.
His strength is being always in full power.
He is right-handed.
Ryota got his driver license after 2 weeks of camp in 2020 when he was 20 years old.
He dreams of performing on stages nationwide and in renowned places around the world.
He wakes up quickly after his alarm goes off.
He is the funniest member.
Neo
Stage Name: Neo (寧皇)
Birth Name: Yoshii Neo (吉井寧皇)
Position(s): Rapper
Birthday: June 30, 2001
Zodiac Sign: Cancer
Chinese Zodiac Sign: Snake
Height: 170 cm (5’7″)
Weight: 57 kg (126 lbs)
Blood Type: A
MBTI Type: INTJ
Nationality: Japanese
Representative Color: Purple
Representative Emojis: 👾🎧
Neo Facts:
He was born in Tokyo, Japan.
His hobbies are reading, video games, anime and baseball.
His special skill is speaking English and French.
He is shy but becomes sociable and talkative once he warms up to people.
He used to work as an English tutor.
He was in Produce 101 Japan S2 (Ranked #85th).
He can play the piano.
Neo’s favorite dish is lasagna.
He joined Avex Artist Academy in 2021.
He was announced as the 8th member on May 7, 2024.
He is the only member who wasn’t in WARPs DIG.
Neo has two cats named Omochi and Ohagi.
He is right-handed.
He is the group’s “Rap God”.
He wants to use his skills to contribute to the team’s music production.
Reia
Stage Name: Reia (黎亜)
Birth Name: Omiya Reia (大宮黎亜)
Position(s): Vocalist, Visual
Birthday: January 10, 2002
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Snake
Height: 180 cm (5’10.9″)
Weight: 56 kg (123 lbs)
Blood Type: O
MBTI Type: ENFP
Nationality: Japanese
Representative Color: Pink
Representative Emojis: 🐰👑
Reia Facts:
He was born in Aichi, Japan.
He attended beauty school and helps with hair and makeup for the group.
He was the 4th member to be announced.
He is friends with RE:WIND‘s Eddie.
His skills are impersonating people’s characteristics.
He likes soccer.
Reia’s favorite dish is Khao Man Gai (Thai Chicken Rice)
He is good at starting conversations.
He is a former HYBE trainee.
His hobbies include watching movies and playing futsal.
He is the tallest member.
He lived 3 years in South Korea.
His happiest moment is when he is eating.
He is right-handed.
He wants to perform at the Billboard Music Awards (BBMAs).
Yuga
Stage Name: Yuga (祐我)
Birth Name: Shibutani Yuga (渋谷祐我)
Position(s): Vocalist
Birthday: April 11, 2003
Zodiac Sign: Aries
Chinese Zodiac Sign: Goat
Height: 170 cm (5’6.9″)
Weight: 63 kg (138 lbs)
Blood Type: O
MBTI Type: ESTJ
Nationality: Japanese
Representative Color: Blue
Representative Emojis: 🦖💛
Yuga Facts:
He was born in Kyoto, Japan.
He enjoys sneakers and perfume, often collecting both.
He was the 6th member to be announced.
He can play the guitar and piano.
Yuga has worked part-time at an Izakaya with his younger brother. He worked at the kitchen
His skill is beatboxing.
His hobbies include playing the piano and collecting perfumes.
He has 3 younger brothers.
According to himself, he has a serious personality.
His brother Seiya was also a contestant in WARPs DIG but didn’t make to the final lineup.
He took lessons at Avex Artist Academy for 7 years.
He’s good at R&B dance.
He dreams of doing a dome tour in Japan.
He wakes up earlier than most members.
He is known as the group’s sexy vocalist.
Tsubasa
Stage Name: Tsubasa (翼)
Birth Name: Isozaki Tsubasa (磯崎翼)
Position(s): Main Vocalist
Birthday: September 22, 2004
Zodiac Sign: Virgo
Chinese Zodiac Sign: Monkey
Height: 169 cm (5’6.5″)
Weight: 49 kg (108 lbs)
Blood Type: B
MBTI Type: ESTP
Nationality: Japanese
Representative Color: Green
Representative Emojis: ️🕊️💎
Tsubasa Facts:
He was born in Tokyo, Japan.
His favorite anime is Bleach and his favorite character is Ichimaru Gin.
He has a “cat-like” personality: cool, independent, but empathetic and often a go-to for advice.
He often watches anime with Mizuki.
He was the 5th member to be announced.
His skills are singing and making Cuban sandwiches.
During WARPs DIG he considered Souma as his rival and wanted to debut with him.
He likes to go to karaoke with his friends.
He joined Avex Artist Academy when he was in high school.
He wanted to be part of a boy group after seen TWICE and BTS.
His nickname is Bassa.
His hobbies include watching soccer, gaming, skateboard, and watching anime.
If Tsubasa could be an object, he would be a bird’s feather.
He is left-handed.
He is determined to perform at Coachella one day.
He loves the movie Top Gun and has watched it four or five times.
Takeru
Stage Name: Takeru (彪流)
Birth Name: Ito Takeru (伊藤彪流)
Position(s): Main Dancer, Vocalist
Birthday: December 20, 2004
Zodiac Sign: Sagittarius
Chinese Zodiac Sign: Monkey
Height: 158 cm (5’2.2″)
Weight: 50 kg (110 lbs)
Blood Type: O
MBTI Type: INFJ
Nationality: Japanese
Representative Color: Yellow
Representative Emojis: 🐣♠️
Takeru Facts:
He was born in Saitama, Japan.
His hobbies include dancing, photography, cars, and cycling.
He was the 3rd member to be announced.
He started dancing when he was 3 years old.
Motto: “Don’t give up until the end, keep trying until you can do it”.
He is competitive.
He is the shortest member.
He attended a dance academy until the 6th grade.
His main skill is dancing.
Takeru really enjoyed eating Pad Thai when they went to Singapore.
He is good at doing acrobatics.
He was a backup dancer for Miura Daichi and SHINee.
He is right-handed.
He enjoys editing dance videos that he films himself.
He is often described as a natural boy.
Souma
Stage Name: Souma (颯真)
Birth Name: Iizuka Souma (飯塚颯真)
Position(s): Rapper, Sainenshō (Youngest)
Birthday: November 10, 2005
Zodiac Sign: Scorpio
Chinese Zodiac Sign: Rooster
Height: 177 cm (5’9.7″)
Weight: 59 kg (130 lbs)
Blood Type: B
MBTI Type: ESFP
Nationality: Japanese
Representative Color: Red
Representative Emojis: 🦄🎪
Souma Facts:
He was born in Shizuoka, Japan.
His hobbies include exploring ramen shops and dancing.
He was the 1st member to be announced.
Charming Point: communication skills and friendliness.
His skills are singing, dance.
He is the group’s fashion leader.
Souma has 3 favorite meals: Lamen, Chocobanana and Gyutan.
He is good at freestyle.
His favorite artist is Michael Jackson.
He started dancing when he was in fourth grade.
His favorite character is Majin Buu from the Dragon Ball saga.
He is the troublemaker of the group.
Souma has two cats, Romeo (male) and Pitcha (female).
He is left-handed.
He wants to improve his English and communication skills.
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