Professor Shiro Sakaki, a butterfly researcher, confesses to turning six young boys, including his own son Itaru, into "human specimens."
2025
as Professor Shiro Sakaki
as Itaru Sakaki
as Rumi Ichinose
as Anna Ichinose
as Toru Shirase
as Hikaru Akabane
as Sho Ishioka
as Ao Fukazawa
as Dai Kuroiwa
