Yeah, I mean there’s a reason it’s so common in isekai because isekai is so popular for the same reason: it enables easy, lazy writing that handwaves actual motivations while allowing anyone to self insert more easily. MC doesn’t have to be a rizzler to pick up girls if he’s picking them up at auction, and neither do you!

I’m surprised nobody is bringing up Rising of the Shield hero here. Bro buys slave children which, while still belonging to him and having magic that forces them to obey his commands, develop feelings for him, presumably due to Stockholm syndrome.