Mai is a grade-school girl who tries to understand her family better.
| Actor | Role |
|---|---|
 Kanako MiyamotoMai Tatsumi (voice) | Mai Tatsumi (voice) |
 Yoshitsugu MatsuokaHikaru Tatsumi (voice) | Hikaru Tatsumi (voice) |
 Daiki NakamuraMamoru Tatsumi (voice) | Mamoru Tatsumi (voice) |
 Sumi ShimamotoYuki Tatsumi (voice) | Yuki Tatsumi (voice) |
 Mami KoyamaHotaru Tatsumi (voice) | Hotaru Tatsumi (voice) |
 Katsuhisa HoukiRaizou Tatsumi (voice) | Raizou Tatsumi (voice) |