Oh! Father

Yukio is a typical high school student in every way except that he has four fathers: Satoru, a professor who helps with his studies, Taka, a gambler with great intuition, ex-club host Mamoru, who helps Yukio with girls, and Isao, a P.E. teacher and mixed martial arts fan. When Yukio becomes entangled in a strange case, he realises that he'll need his fathers' help more than ever before.