Cuckoo

Villainess abused the ML and tamed him by illegal means. FL has to mop up her hosts mess and unfortunately has to pay for what she has done (not forever but still)

FL knows how to charm people w/ her sincerity (especially females). wFL loves FL and outright rejects the Welsh (they're all awsholes, crazy, and seems to just want to possess her like an object).

FL possesses the villainess' body but actually has a saint-like personality. She'll feel bad for anyone tragic and will try to help. These people end up falling for her and kinda go yandere (she's not stupid tho just low EQ)