It is physical checkup day at school. After Kiyo does his long jump, Yamanaka challenges him to a contest out of jealousy. Kain and Iwashima join and the four bet portions of their lunches on the four events. Kiyo and Yamanaka get the Unagi for winning the first round. Kiyo gets the melon smoothies for winning the Handball Toss, the second round. Iwashima gets the steak for the 3rd round, and Kain gets the strawberry upside-down cake for winning the 4th round, but not before breaking his back during the back-strength test. Episode Guide