Ginko is just about to tell Rin that in that case he'll go ahead and go back to keeping an eye on the stoners (and he can't really blame him for being a little irritable. Frankly, it's probably for the best that he not be left unsupervised with a stove, given that he's never used one) when Henry... happens.

He looks at Henry, then at Rin again. "I'll... go keep an eye on them."

He turns around and ushers Henry back where he came from, much like one would an easily-startled child, raising an eyebrow at his arm. "Henry, I told you I would be right back, didn't I? I was just gone for a couple minutes."