18+ Akaruku Tanoshii Saimin Gakuen: Ero Kousoku wo Ippai Tsukuttara Chou Riajuu ni Nareta!

He instituted new regulations that made his brutal fantasies into reality.

A new school life with nude attendance, where menses are announced and sex can happen anywhere......

The power of hypnosis makes anything possible.
School is bright and fun, at last!

* New regulations
- Everyone must attend naked, in swimwear or in school uniform as designated that day
- Girls must answer roll call by saying whether they are bleeding or not
- During cooking class girls will wear aprons and nothing else, and treat sexual urges of guys
- Health education will be largely gratuitous practical study
- Athletic warmups will be sixty nines
- The top ranked student will be awarded with a vaginal cumload
- The light music club will perform interactive sex concerts
- Illicit sexual relationships are encouraged, and proposals will be accepted with intercourse
.... and more

(Source: dlsite)