He works as the vice-principal in the same university with Kenshiro Kasumi and he desires to marry Aya Kitaoji as a way to become Univeristy President. He is very jealous of Kenshiro, but his attempts to discredit only make him look better.
He is a comical character in the series. Masao is a midget with a combover that he is unaware is obvious to everyone.
- In the anime he is voiced by Kazuhiro Nakata and gets a few more appearances such as driving a fancy sports car.