Katsuji Mori

Hiromi Oka, a first-year student at West High School, joins the tennis club admiring Reika Ryuzaki, aka Mrs. Butterfly, and senior Todo. She is a complete beginner, but as soon as she joins the club, the devilish coach, Munekata, sees her talent.

A Pinocchio-like figure becomes a publicly renowned superhero complete with laser-firing fingers, uncanny hearing, and jet-powered boots.

Six-year-old boy Gen Nakaoka lives happily with his family in Hiroshima, but after the summer of 1945, everything is about to change.