It was a manga about a high-school girl who got isekied to another world in the demon lord's castle & the demons told her that they were at war with humans & she had to give birth to ten kids for them to win the war?
https://www.mangago.zone/read-manga/i_became_the_mother_of_the_strongest_demon_lord_s_10_children_in_another_world/
It was a manga about a high-school girl who got isekied to another world in the demon lord's castle & the demons told her that they were at war with humans & she had to give birth to ten kids for them to win the war?