- Country: Japan
- Genres: Comedy, Family, Musical
- Release: 2017-12-23
- Director: Tsutomu Hanabusa
- Writers: Kanan Minami , Keiko Hokimoto
- Language: Japanese
- Stars: Kento Nakajima , Yuna Taira , Yuri Chinen , Sylvia Grab , Tomoko Ikuta , Shingo Murakami , Masahiro Takashima , Maika Yamamoto
- Runtime: 105 min
- Awards: N/A
- AKA: I'm Underage But I'm Not a Child (United Kingdom) , We Are Underage, But We Are Not Children (Canada) , Miseinen dakedo kodomo janai (Ecuador) , I'm Underage But I'm Not a Child , Miseinen Dakedo Kodomo Janai (Philippines) , Miseinen dakedo kodomo janai (Germany) , Miseinen dakedo kodomo janai , 未成年愛狠大 (Taiwan) , I'm Underage But I'm Not a Child (United States of America) , 未成年だけどコドモじゃない (Japan)
- Plot: On Karin Oriyama's 16th birthday, she receives a present from her parents. Her present is marriage. The person she marries is her first love Nao Tsurugi. He is a popular senior in high school. For Nao, he only marries Karin for economic reasons and in particular the wealth of her parents. Karin loves him truly, but Nao doesn't love her at all. Their marriage is a secret, but Isuzu Ebina, who holds feelings for Karin, learns of their marriage.
- IMDB:tt7027850
I’m Underage But I’m Not a Child Cast · · · ALL
Tsutomu Hanabusa
Director
Yuna Taira
Karin Oriyama
Yuri Chinen
Isizu Ebina
Maika Yamamoto
Saaya Matsui
Shingo Murakami
Kaburaki
Sylvia Grab
Akari Oriyama
Masahiro Takashima
Keishi Hunt