Bunji and Ma are doing the Unpoko Dance, but Chi is staying back and watching. When Mom asks Chi why he's not doing it, he ran to the toilet... Even though they are in elementary school, the fighting never stops, and Mom gets angry at Bunji and Fumi. When Dad walks by, she tells him to do something about it. When he hears about it, he does so reluctantly, and Mom's anger turns to him.