Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."
Hidetoshi Nishijima
Professor Shiro Sakaki
5 episodes
Somegoro Ichikawa
Itaru Sakaki
5 episodes
Rie Miyazawa
Rumi Ichinose
5 episodes
Aoi Ito
Anna Ichinose
5 episodes
Towa Araki
Toru Shirase
5 episodes
Jyutaro Yamanaka
Hikaru Akabane
5 episodes
Kodai Kurosaki
Sho Ishioka
5 episodes
Leo Matsumoto
Ao Fukazawa
5 episodes
Ikuho Akiya
Dai Kuroiwa
5 episodes
Jun Murakami
Ichiro Sakaki
4 episodes