Naofumi obtains the mirror vassal weapon from Kizuna's world, which can enhance abilities through food. Now Naofumi and his allies start stuffing their faces for the sake of getting stronger! But there's a limit to how much volume they can stomach. Seeking food that can better boost their abilities in smaller servings, the party heads to a town inhabited by a famous chef. However, after a trivial comment, Naofumi finds himself facing down the chef in an all-out cooking battle!