10 HOUR SLEEP

My roommate at the police academy dorm helps me lose my virginity!

The story of a plain salaryman who, while harboring feelings of inferiority towards his handsome and sadistic salesman colleague, does a good job of nonetheless being pampered as his masochist doggy.

A girl who has been diagnosed as having a succubus constitution, and must have sex periodically for sustenance, ends up having nutrient replenishing sex with a classmate whose love for her is a tad on the cumbersome side.