Natsumi Hayama (羽山夏美)
Natsumi is Akito's older sister. In the first few episodes she is very mean to her younger brother and blames him for the death of their mother. Later a movie is released with a story quite similar to the Hayama household which is a wake-up call for Natsumi. Later she becomes much nicer to Akito and they start acting like a family again.
Voice Actors
Akemi Okamura
Japanese
Michiko Neya
Japanese
Caitlin Glass
English
Elisabetta Spinelli
Italian
Daniela Fava
Italian