It's just fair, I think! Just something in return for something given.
[ Gladly surrenders the bag of fruit. Now that this is the second time Ryo has shaken hands with a carapacian, he's starting to think that... it might not be costume after all! But how to ask, without seeming impolite? ]
You all live together then -- PM, AR and yourself. I don't think I've met AR though.