As usual, Kinugawa and Yufuin are walking to Binan High School together as friends. But after a stop at the convenience store, Yufuin suddenly gets angry at Kinugawa and yells at him. A rift forms between the two, and soon a panic develops over them potentially leaving the Defense Club. Yumoto works blindly to try to get the two to make up, but Naruko and Zaou rebuke him for it. Will Yufuin and Kinugawa ever make up?!
No, no. It's my fault for secretly
swapping my seat with yours in class
Nein, nein. Es ist meine Schuld, weil ich
im Unterricht unsere Stühle getauscht hab,
No, no. Es mi culpa por cambiar 
escritorios contigo en secreto
No, no. Es mi culpa por intercambiar
 nuestros pupitres en secreto
Non, c’est moi, j’ai échangé nos chaises
parce que la mienne bougeait.
No, no, è stata colpa mia per aver 
scambiato di nascosto la mia sedia con la tua,
Não, não. É minha culpa por trocar
 as cadeiras da sala de aula