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.
Hayato's just done so much for me.
This is nothing in comparison.
Esto ni se compara a todo lo que Hayato
hace por mí cada día.
J’ai encore beaucoup de progrès à faire
pour atteindre le niveau de Hayato.
Hayato fa sempre tanto per me e 
questo non è niente di che in confronto.
Não é nada comparado ao que
o maninho Hayato fez por mim.