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.
I don't know what you're talking about.
Keine Ahnung, wovon du da sprichst.
¿Por qué será?
¿Por qué será?
Vraiment ? Pour quelle raison ?
Non so di cosa tu stia parlando.
Não sei do que está falando.
Не понимаю, о чём ты...