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.
or I bet they'd say worse than "wacky."
."وإلا نُعت بألفاظ أسوء من "مضحك
Darum finden die ihn wohl lustig.
solo les parece un tipo chistoso.
normal que les parezca un tío gracioso.
elles le trouveraient moins rigolo.
uno yakuza di ventisei anni
 che si finge un liceale.
ou diriam algo muito pior que "doido".
Вот он и кажется им забавным.