高木 鉄夫

Yoko's ex-husband. He is divorced, so his last name is different from Yoko's.

He is muscular, macho, and has a simple mind. He is proud of his muscles. He always says “Look at me, look at me!" He met Yoko at a fitness club, but was not instructed by her.

He is a lover of adult entertainment, and sometimes demands sex play from Chizuru as well. He did not attend parties when married, but during their divorce, he frequented it quite a lot.