Kitto Kiss O Suru Tokiきっとキスをするとき; 一吻定情; I'm Sure That When We Kiss...; Kitto Kiss wo Suru Toki; Kitto Kisu wo Suru Toki

Shin and Mitsuya and Shin’s little brother Satoru have been friends since childhood, and Shin is super proud of his hot best friend and adorable little bro. But when Shin finds out that Mitsuya isn’t being entirely honest when he professes to have never kissed anyone before, he can’t help but wonder just who Mitsuya has kissed before…