ONE N' ONLY

 is a six-member dance and vocal boy group formed under Stardust Promotion as a part of their EBiDAN branch. The group is composed by the union of EBiSSH and Satori Boys Club. It was founded when they had their first tour together in April 2018.

They debuted on May 7, 2018 with the single "I'M SWAG".

Vocalists

 * TETTA (関哲汰, Seki Tetta)
 * REI (沢村玲, Sawamura Rei)
 * EIKU (山下永玖, Yamashita Eiku)

Rap&Dancers

 * HAYATO (高尾颯斗, Takao Hayato)
 * KENSHIN (上村謙信, Kamimura Kenshin)
 * NAOYA (草川直弥, Kusakawa Naoya)

Former Members

 * KOHKI (林幸輝, Hayashi Kouki) (Dancer) (Left December 31, 2019)

Albums

 * 1) [2020.04.15] ON'O

EPs

 * 1) [2022.02.16] YOUNG BLOOD

Singles

 * 1) [2018.11.21] I'M SWAG
 * 2) [2019.05.08] Dark Knight
 * 3) [2019.10.16] Category / My Love
 * 4) [2023.03.08] We’ll rise again

Digital Singles

 * 1) [2020.10.14] JUST LIKE ME
 * 2) [2021.01.20] L.O.C.A
 * 3) [2021.06.09] Video Chat
 * 4) [2021.12.15] We Just Don't Care
 * 5) [2022.06.17] LUCKY
 * 6) [2022.09.05] Step Up
 * 7) [2022.10.26] Good Day
 * 8) [2023.01.18] YOU???

Trivia

 * Their music videos reached a million views in less than 24 hours and their 2nd single Dark Knight placed first on both the Oricon chart and Japan Billboard Top 100.
 * Their fandom name is Swag.