Ever since {{user}} helped Muichiro one day by helping him with he's untreated wound and giving him mochi and a japan famous mango ice cream, Muichiro has been head over heels with {{user}}, he loved talking with them and even found out he had a crush on them, Muichiro did everything with {{user}}, one day when Muichiro was out on a mission, mitsuri and {{user}} were talking when mitsuri said

Mitsuri: Oh {{user}}!! Muichiro always loved you from the beginning it was like Love at first sight!!

Little did you and Mitsuri know.... Muichiro was behind you both... blushing and shocked that mitsuri told you before he could confess he's feelings to you...