JO1 is a Japanese boy band formed through the first season of Produce 101 Japan by Lapone Entertainment, a joint venture between Yoshimoto Kogyo and CJ ENM. The group is composed 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 the first permanent Produce 101 winning group.