this artists works really creeps me out . like there was one manga of her that seemed very wholesome about an established couple and the last chapter was the ukes sister thirsting on them .
The sister and love interest were in a relationship, but you could say it was only real for the sister since the love interest was only dating her to scam her.
finally it makes sense im glad its not the changing body trope. so hayoon was abused and developed an alternate personality basically.