This oni dude is the sort who lets himself into your house, raids your fridge, eats all your premade food, and declares himself your guest.
"You can cook, right?"
If you at least put forward an effort to treat him as a guest he blesses you with good fortune.
If you dont, he faces all your furniture north, eats the rest of your food, and takes longer to leave.
Additionally, his little glass infinitely generates alchohol.
However, no matter how you perturb him, not even a single drop will spill.