Responses
if u find it tell me too!
OMG I FOUNTD ITT FOUND ITT
https://www.mangago.me/read-manga/nindan_danshikou_de_ninshin_shita_ore/
thank uuuuu ilyyy
So, it was an mpreg. Due to some reasons, the women in that world couldn't give birth. So they invented a way for the guys to get pregnant. And the mc is one of those guys. But he is hiding it from others including his best friend. Then that best friend guy finds out and then they become a couple.
Also, there are side couples too. They all went on a date once, but mc got his periods.
I remember i found it from the popular manga list.