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.
Even though mom came to mine,
Ich war schon furchtbar traurig,
Aunque mamá vino a verme,
Quand je repense
à la peine que j’ai ressentie
Mi sono sentito così triste 
quando la mamma è andata via prima,
Embora minha mãe tenha ido na minha,
Когда мама пришла, а потом ушла,
мне было ужасно грустно.