Kainuma Ryusei

Ryusei is a mixed Japanese-Brazilian member of a Jpop group Ballistik Boyz (BBZ) from Exile Tribe, managed by LDH.

He was selected to join the group after being one of the finalists from the 2017 Vocal Battle Audition 5 (Rap category). The group made their official debut on May 22, 2019.

Prior to debut, he was a student in LDH's dance school EXPG in Omiya.