|Relatives||Mimori Unyū (daughter)|
|Manga Debut||Chapter 196|
|Anime Debut||Episode 74|
Rintaro Unyū is the father of Mimori Unyū.
Rintaro has reddish brown hair that parts in the middle, and he has a full beard style. For attire, he seen wearing a red Hawaiian shirt.
Rintaro is a passionate and carefree person who wants to help Mimori Unyū's friends.