\o/ ohhhh, yeah that'd be great! He'd totally be the kind of guy to ask if Yukine needs that thing he stole (which, btw, if Yukine answered 'yes' to, he'd believe it....) so them running into each other over petty stuff would be real cute. Not actually stopping him but Concerned and still scolding him, that's his way...

Maybe they hang around the same kind of shops and stuff since Yukine's looking for Yato and Kiryu's will have talked to him a few times?