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JO1 (ジェイオーワン, Jeiōwan) is a Japanese boy group formed through the reality competition show Produce 101 Japan. The group consists of eleven members: Issei Mamehara, Ren Kawashiri, Takumi Kawanishi, Shosei Ohira, Shion Tsurubo, Ruki Shiroiwa, Keigo Sato, Syoya Kimata, Junki Kono, Sukai Kinjo and Sho Yonashiro. The group is currently managed by Lapone Entertainment and is slated to be a permanent group. JO1 debuted on March 4, 2020, with single "Protostar".