Like he really owns her as property.
Arranged marriage in historical times only counts, if the ML or his family has already paid before they got married and there's no chance in hell the FL or her family could ever pay back the debt.
Or something more fantasy like, I remember reading a Manga several years ago where the parents of the FL sold her to the ML who was a demon in exchange for something, I don't really remember exactly, and then he basically raised from a small child until she became of age and they married.
