Two stories in movie. Story 1 Yukka is in Tokyo for university entrance exam, and she has to temporarily stay with her Cousin Yoshi. Yoshi is surprised to see his little cousin is grown up as a young beautiful girl. Yoshi cannot help but to fall in love with Yukka, and their relationship starts to change intensely after sudden incident... Story 2 Massah and Misak half-blood siblings. Their father goes on business trip and leaves the siblings staying at home alone. One night, Misak feels depressed coz of sudden break-up with her boyfriend, Massash sympathizes her charming little sister. However he finds his love towards Misak is out of control... results extreme.
Unfortunately the movie All Grown Up is not yet available on HBO Max.
| Directing | Jirō Ishikawa | Director |
| Production | Yoshinori Takazawa | Executive Producer |
| Writing | Jirō Ishikawa | Screenplay |
| Camera | Norimasa Nakamoto | Director of Photography |
