MC gets reincarnated as a powerless discarded sword turned girl in a Yuri Demon Academy setting, which she is forced to attend to survive. It also just so happens that she's pregnant as well?, She then gets bullied and harassed by everyone at the academy due to being weak and is made to live in a closet. However, surprisingly the hero in disguise starts to help her out, is it because the hero is good person? Uhh maybe but not to demons, as it turns out it was a ploy to learn her identity which ends in torture and forcing the MC to become her pawn that will likely die.

This is followed up immediately by the MC giving birth to twins belonging to the hero and the demon lord.

Which forces her to work in food delivery to feed her children, while attending class and spying on her fellow demons, pretty pitiful position which does make your feel for the MC.

After getting discovered as a spy, the MC then proceeds to end up being tortured by the Demon King, before the Witch of the Academy swoops in and through negotiation solves the issues of housing, expenses, tutoring and even mentorship with the family, Since the children are quite powerful and age rapidly even becoming the the MC's classmate despite being like a month old.

The hero meanwhile discovering the similarities between one of the children, tries her best to get closer again, but the MC reasonably rejects her completely (due to all the torture/pain/s*avery stuff) resulting in the hero becoming an annoying stalker.