Ben-To (2011)

Every day an epic struggle rages in grocery stores across Japan - the battle for half-priced bento boxes! Once the discount stickers go on, ravenous brawlers start throwing punches in a knockdown, drag-out war over who gets to take home the cheap eats. When a young, broke high school student named Sato joins the Half-Priced Food Lovers Club, he proves to be a rising talent in the world of insane food fights. But does he have what it takes to become the king of clearance cuisine?