Ghostly waffles: Bat periods
I just found out some bats can menstruate (have a period) and I just had a thought: what if f!Yuu and Lilia had it at the same time and only nobody knew about it since Lilia keep it low-key in the war to not show any weakness to his soldiers/didn’t have it yet (potential angst of child war general au?).
Then after the war he just kept it hidden since he was used to keeping it hidden.
Queue Diasomnia freaking out because Lilia and the prefect are bleeding?!?! And are perfectly fine about this?!?!? (I believe Lilia raised Silver to be as gentlemanly as possible, so if women in the twst world canonically have periods, he would probably know about it already, but shhhhhhh)
Also potential for fem or trans Lilia (both fluff and angst!)
From the Wiki I read: