Due to a crowded lunch line and expensive cuisine menu, Rin and Yukio talk to Mephisto about meal plans but he is not much help. The brothers go grocery shopping with Yukio's salary, and Rin cooks lunch for them both. However, when their meals go missing, Mephisto explains that his familiar, Ukobach, is responsible for cooking their meals and dislikes it when anyone else uses the kitchen. Rin and Ukobach engage in a cooking battle and become friends in the result of a draw.