Is there a hentai anime where we have a scene like this?
>weird gas/magic/whatever invades the class room
>everyone start to feel horny
>everyone loses their mind
>start to fuck each other in a mass orgy (preferably straight or yuri)
not asking sauce on pic, just suggestions
[NCP] Kansen | Infection
uhn, maybe an anime?
>>4316741
Pollinic Girl Attack..? It's a h-manga.
I think that fits the requirements as far as I remember.
I thin theres a recent anime call "Drop out" or something with this premise
>>4316772
The Kansen games got pretty brutal; the lack of any translation certainly didn't help. Movies, while watered down, were a decent representation of what went on.
For anyone who isn't aware, the Kansen series is basically a rape-zombie plague that hits Japan. Kansen 1 is in a school and has two heroines - one will stay with the MC, the other gets raped by his fat pervy classmate and acts as the overall antagonist. Second is at a mall, third starts at a school and is city wide, fourth was in.... the woods? Fifth was an island, I think. There's also ballbuster which is basically a giant rape-orgy OVA with no real story. As for the movies, I think only the first Kansen one represents the branches of the story - the others pick a route.