Tsukamatara Soku, Gyaku Rape Gakuen by Dieselmine - Adult Sex Game

Kou Kisaka.
The only guy in the entire school.
Assailed from all sides by a legion of insane girls.
If he can just survive 3 days, he'll be able to transfer out of here.
Until then he's constantly on the brink of slavery: if any one girl gets him or his sperm is squeezed to the last drop, that will be the end of freedom...