So what I'm hearing is that he's gonna seek Kiryu out all the time to convince him to buy him food. It's like feeding a stray cat. Once you do it once, it won't go away.

...HAHAHAHA. Oh no, Kiryu, you're gonna have the Worst Time if you get involved in the Yukine-Yato situation. I mean, with that said, please get involved. He's probably going to end up repeatedly punching him in the face. Much like in their original canon.