You know, I think Mitsuki really would have no chance if she hadn't been there first...
A cat that can look after itself that's also a gf as affectionate and obedient as a pet. It's a deal that has all the benefits and none of the downsides of having either.
"obedient" is kind of overselling it when it comes to cats... but overall I agree. At least because of the human part you can reason with it.
"Do not eat this houseplant. It will kill you. I can buy you some cat grass if you need fiber."
"This is human food. If you want some, I can make you a little portion without garlic."
"If you're going to vomit, please aim for the smooth floor and not the hard-to-clean chair fabric."
"The veterinarian is here to help you. It is a checkup, not your imminent doom."