I love it! but consider this: McCree being an asshole and not asking Hanzo for permission. He just sighs and lets it flow because he knows Hanzo is a freak like that but will just not admit to it.
Hanzo’s spitting protests getting softer and softer as his guts fill with warm piss and his belly starts bulging. He gets so docile and sweet when he’s filled up with McCree’s pee. So cute.