Ijichi Katsutoshi

Katsutoshi Ijichi, an old friend of the protagonist
He has dark skin and a cool vibe.
He is an old friend of Masashi and they get along well because they have the same sexual inclinations.
He loves girls like Makino who are interested in sex but are still innocent. He tries to mold her in his own way, and gets excited when he sees his daughter having sex with his old friend.