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. JO1 is the first Produce 101 winning group that is intended to be permanent.

Produce 101 Japan is a 2019 Japanese reality competition show, co-produced by Yoshimoto Kogyo and CJ E&M. It is a spin-off of the South Korean Produce 101 franchise. The show follows 101 contestants with the intention of producing a permanent eleven-member boy group.