Koko ga Genkai no Oval Gakuen - Vol. 1 Ch. 5

[MangaDex]

 

[Fantasie841]

Okay, so these monsters are not actually outside invaders, but something humans created.

Interesting.

 

[Kanelel]

So which of them is getting pregnant? Sakura is more cutesy, while Himawari is more serious, so maybe Sakura will be the mom. On the other hand, Sakura is a more active person who's in a leadership role, while Himawari is passive, so maybe Himawari is the mom.