Musukko Club (息っ子クラブ) was a short-lived male spin-off idol group of Onyanko Club. They made their debut in 1986 with the song Boku-tachi no Season, and broke up after their February 15, 1987 concert at Nippon Budokan.[1][user-generated source] The seven members of the group were Ken Iwashiro, Shūsuke Namiki, Yoshinori Satō, Yōji Sawamukai, Kō Shimizu, Hirotoshi Shinozaki and Hiromitsu Shizuku. After 3 decades, the group reunited in 2016 and has been active ever since.