This? Futago no Kyuuketsuki ni o Tsukae Shite Imasu
Oh, I think it is that. Thank you!
there’s also Dog Eat Dog Era by Yamanashi Musune, same/similar plot :0
Musume*.
Or dog eat dog era - Kyokon no Mahou Kishi to Saimin Jinmon
I've checked both and I think I had read both! But mostly the one I searched for is dog eat dog era. Tyvm you all.
of a story where the girl was held hostage or something by a pair of twin. I don't remember much but each time they did the deed towards her, they will do something to make her forget about. I also forgot whether she's an isekaied person or a sai t. It has been bugging my mind. So, making myself shameless...I ask...and I hope someone knows.