Responses
sounds like Concentration of Malice
https://www.mangago.zone/read-manga/concentration_of_malice_r19_version/
It is, thnx so much!
It was a historical smut manhwa with color. Fl is isekaid and wants to break up with her fiancee (Black haired) cuz he is a psycho (he uses his bodyguars to SA her), he also used a healer or a silver haired butler as his spy that secretly "trained" her body to the SA.
So sick of it, she creates a plan to frame her fiancee as a abusive and physically violent person. She throws herself to the stairs and later on puts on make up to deepen the bruises.
This all goes to trail and the ml (the crown prince) sides with her and also testifies as a witnes