Umine Kouki

 (海音 聖), also known as Umineko (うみねこ), is a member of cosmic!!. He joined the group on June 30, 2018 as a trainee, but left in October of the same year due to personal circumstances. On January 19, 2019, he officially returned to the group.

Profile

 * Name: Umine Kouki
 * Nickname:
 * Birthday:
 * Birthplace: Chiba, Japan
 * Zodiac:
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 * Height:
 * Member color:
 * Familiar: Eight