Koyuki's worried about his future. He wants to be a teacher, but he's not sure he can do it.
I swore I'd never call out his antics,
،أقسمتُ ألا أنتقد مقالبه
Ich habe mir geschworen,
nicht auf ihn anzuspringen,
Juré no hablar de sus tonterías,
Juré no hablar de sus tonterías,
Je m’étais pourtant juré
de ne pas lui parler,
Anche se ho giurato
di non dare corda alle sue buffonate,
Jurei nunca dar atenção
às bizarrices dele,
Я поклялся не реагировать 
на его выходки,