Based on a light novel series by Asaura, with illustrations by Shibano Kaito. One day a poor freshman high school student named Satou You discovers a bento (boxed meal) on sale at half price at the local supermarket. Reaching thoughtlessly to grab the newfound treasure, he ends up unconscious on the floor of the store a brief moment later. He soon finds out that getting a half-priced bento means taking part in a fierce, no-holds-barred supermarket survival battle. Despite being warned to stay out of it, he continues struggling to hold his ground until the Ice Witch, Yarizui Sen - a second year student and current president of the half-priced food lovers club, invites him to join her club because she sees his remarkable strength. Finally You is able to compete with the other fighters, including his half-cousin Shaga Ayame.