Mizuchi's Boyfriend/Relationships

Here are the different established relationships of Mizuchi's Boyfriend with the other characters, during the course of the publication of manga and anime.

Mizuchi
It is implied that it was Mizuchi who sought to have a relationship with him just for being a harlequin rabbit like her. He cannot stand Mizuchi's controlling attitude and is afraid of her because of her great temper. She was annoyed that he did not care much about being unfaithful and even considered breaking up with her. They're currently back together as a couple.

Haru
He really enjoyed spending time with her, not only in bed, but also in conversation, finding it "refreshing". He considered breaking up with Mizuchi and starting a relationship with Haru, until he learned that she sleeps around and gets involved with many males. This disappointed him and made him feel used.