Shouta is sent back in time to his elementary school days via a mysterious school pool. He sees Konomi, a girl who would eventually become a nationally popular actress, and other cute girls when they were innocent and defenseless.
| Actor | Role |
|---|---|
 Yasuaki TakumiShouta (voice) | Shouta (voice) |
 Mayuka NomuraKonomi (voice) | Konomi (voice) |
 Sachie HiraiManatsu (voice) | Manatsu (voice) |
 Ayano NiinaRio (voice) | Rio (voice) |
| NNana InoueNako (voice) | Nako (voice) |
 Kanami SatouSayo (voice) | Sayo (voice) |