There was once a Tumblr user who suggested the idea of a "Human pet".
imagine if you will, you and your beautiful spouse own a decent house. but for whatever reason, there also there's a NEET girl living with ya, kinda like Meowth from team rocket.
shss not yalls daughter, not part of some larger polycule, she just lives there, like a pet.
I'm rod sterling, and welcome to The Twilight Zone
I'd personally imagine you find yourself in this living situation simply through the following chain of events
You and Human Meowth are roommates to begin with
your partner moves in with you and your roommate, (as opposed to buying your own house because who can afford that these days?)
you have no reason to kick out Human Meowth, they pay their share of rent, they aren't an insufferable person, and kicking them out would be cruel on your part.
So, Human Meowth just lives with you and your partner.















