Hatsukoi Scandal.

初恋スキャンダル

Hatsukoi Scandal (Japanese: 初恋スキャンダル, Hepburn: Hatsukoi Sukyandaru; "First Love Scandal") is a Japanese manga series by Akira Oze. It won the award for best shōnen manga at the 31st Shogakukan Manga Award. It was adapted into a TV special in 1986.