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 already works so late
on lesson plans after doing chores...
Jeden Tag, wenn Hayato-niisan
mit dem Haushalt fertig ist,
Después de hacer
los quehaceres de la casa,
Quand Hayato a fini
de s’occuper de nous,
Hayato lavora già fino a tardi per preparare
 le lezioni, dopo aver fatto i lavori di casa.
O Hayato já fica até tarde preparando
as aulas depois de fazer as tarefas...
После дел по дому Хаято каждый день
допоздна готовится к урокам.