SOLIDEMO is an eight member Japanese boy band under avex that debuted with the single The ONE in 2014.

The band members consist of SCHNELL, Takeshi Mukaiyama (向山毅), Kazuya Sasaki (佐々木和也),
Tomoya Yamaguchi, Keiichi Sawaki (佐脇慧一), Yuki Nakayama, Akito Teshima (手島章斗), and Hiroyuki Kimata (木全寛幸). The group’s fandom name is Collars.