Amane's mother, Shihoko, arrives at the apartment without warning while Mahiru is visiting. Amane asks Mahiru to hide, but Shihoko eventually finds her, and the two neighbors frantically try to correct Shihoko's assumption that they are dating. Nonetheless, Mahiru is touched by Shihoko's motherly kindness. After Amane sees how happy Mahiru is to be called by her first name, he tries calling her "Mahiru" too. From that day on, the neighbors call each other by their first names.
It's none of your business, Mom.
هذا ليس من شأنك يا أمّي
Etwas, was dich … nichts angeht.
Eso no es asunto tuyo, mamá.
Eso no es asunto tuyo, mamá.
Ça te regarde pas.
La cosa non ti riguarda, mamma.
Não é da sua conta, mãe.
Не твоё дело, мам.