自购。看封面以为有什么大动作，实际情况一般。
喜欢可以考虑入正：
https://www.dlsite.com/maniax/work/=/product_id/RJ01181249.html

https://www.melonbooks.co.jp/detail/detail.php?product_id=2373550

Synopsis:

"I mean, I'm having sex like it's normal, but we're in class right now."
The gloomy teacher has sex with his students all over the school, in the girls' locker room, the gym prep room, the career guidance room...

The protagonist has a really dark and gloomy appearance and is a male teacher who has lived a lonely life with no experience with women.
After developing an obsessive interest in the occult, he comes across a magic book that can change the common sense of the world.
He orders the girls in uniform to "have sex in class" and "get pregnant with my sperm."
The girls in uniform obediently follow his orders without any suspicion, and the gloomy teacher plays with their bodies as he pleases (͠≖ ͜ʖ͠≖)

Base +22, Porokichin66 +9, surippa +6, ADIN0 +10