Isaku is frustrated with Keiya when he doesn't even try to pass his tests at school. They agree that she'll give him a reward if he passes his next make-up exam, but the reward he asks for is nothing Isaku could have expected.
Today I'll start studying for real.
.سأدرس اليوم بجد
Ich lerne von heute an wirklich.
A partir de hoy
me tomaré en serio los estudios.
A partir de hoy,
me pondré las pilas con los estudios.
Je vais vraiment étudier,
à partir d’aujourd’hui.
Da oggi... studierò seriamente.
Hoje vou começar a estudar para valer.
с этого дня я всерьёз
сажусь за учёбу.