Futaro is hospitalized for a while after falling sick at camp school. He returns to work tutoring the quintuplets, only to realize someone has fallen way behind.
Ow, ow, ow!
Aua, haua, ha …
¡Ay, ay, ay!
¡Ay, ay, ay!
Aïe ! Aïe ! Aïe !
Ahi, ahi, ahi!
Ai, ai, ai...
Ай-ай-ай-ай-ай-ай...