Yuuka.
She's an extremely powerful youkai, so she'd be handy to have around.
She probably doesn't have many friends, being a renowned horrible sadistic monster. This loneliness might make her a bit more desperate for other sounds then screams of agony and fear wherever she goes, such as friendly greetings.
She'd probably refrain from instantly murdering me if we were friends.
So long as I stay on her good side and she's in a good mood, I could probably stay over. A giant flower field would be a nice thing to look at if I don't get close enough for them to eat me. I'd even make breakfast to her taste.
But then again, perhaps I've got a death which.