Well this was quite bizarre lol.
This side ponytail, ribbon, skirt and stockings design was out if this world.

I feel bad that the Class Prez had to deal with all this. We've seen the "getting stuck in a room and can't leave until they have sex" scenario many times but she's stuck with the creepy, scumbag class pervert that she despises and by the end she's so over all this bullshit.
I also feel this obviously deserves the forced tag cause even if you use the "hentai logic" of the Class Prez reluctantly has sex solely to escape her situation, it doesn't account for the gross MC. Where as soon as the door opens and both of them are free to leave, he attacks her again and bangs her till she until she passes out and she wakes up with him carrying her.
-Plus no tsundere tag.

(Gotta shout out my favorite vanilla "trapped in a room you cant leave until you have sex" chapter, The Room You Can't Leave Until You Have Sex.)

"What exactly is a room you can't escape unless you stick it in?"

Probably one of many many stopovers within the H-Universe's equivalent of .....

The Twilight Zone. 👽👾🤖

Surprising reveal at the end really hoping for a sequel!

just hope we get at least a short sequel where they get back home and the guy sterilized.

So my sci-fi riddled brain saw the ending and had a few thoughts.

1) Distant future. Capture people from the "present" and drop them off in a barren future to reproduce.

2) Alternative timeline/reality. Similar to 1

3) Alien prank. Some teenage alien pulls people to their planet and leaves them in the wilderness.