All the women in this story are treated as sex slaves and the MC actively participates in the sex part.
ALL the female classmates were imprisoned somewhere, brainwashed and forced into having sex with the inhabitants of the otherworld because they have low fertility and the MC not only ignores this, he even has sex with them. It's actually appalling seeing a MC do this to his classmates instead of thinking "hey... maybe I should help them or atleast not rape them?"
This author is genuinely disgusting, this manga tells me a lot about how he views women.
Don't read this, you're better off reading regular hentai if you're horny.
