Ah, ah, ah! [ He holds the bottle away from her reach. ] That's quite the reaction for nothing, Yuuki. [ If he wasn't genuinely curious before, he is now. ]
As for what I'm doing here... Pfft. Aside from the very obvious.. [ What with this being a convenience store and all that. He lets her see the contents of his basket. Completely healthy selection of fresh food. He's got everything he needs. Plus a little more. He lifts up a bag of mixed salad and shows her the blood bags. ] Yummy.