Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."
Professor Shiro Sakaki
Itaru Sakaki
Rumi Ichinose
Anna Ichinose
Toru Shirase
Hikaru Akabane
Sho Ishioka
Ao Fukazawa
Dai Kuroiwa
