A class observation day was scheduled to be held in Gaku's class. However, Gaku was worried that if Hayato took a day off to attend, it would cause inconvenience at his workplace and increase his workload.
I... I accidentally found out about it.
Ich habe alles mitbekommen.
y me enteré de todo.
j’ai découvert un secret.
H-Ho appena scoperto per caso che...
E-Eu acabei descobrindo tudo.
Я случайно узнал…