清水 美紗子

Arahama's coworker.

Originally, she had a crush for Arahama, and when he invited her to eat one day, they have sex.

She thinks she's in a lover's position and told Arahama about their marriage, but he explains that he just consider her a sex friend.

SEX preference: Gentle sex and creampies.

"Please keep calm. Youth isn't what you need for a marriage. Do you think it would be a problem if I couldn't do cooking, washing, cleaning?"