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.
Well, if you don't have friends who are 
that close, then probably just your parents.
،حسناً، إن لم تملكي أصدقاء مُقرّبين
فغالباً والداكِ من يفعلا ذلك فقط
Na ja, wenn man keine engen Freunde hat,
würden das auch nur die Eltern tun.
Si t’as pas d’amis, y a que tes parents
pour t’appeler comme ça.
Beh, senza amici stretti,
 probabilmente gli unici saranno i tuoi genitori.
Bem, se você não tem amigos próximos,
apenas seus pais chamariam.
Ну да, обычно это или хорошие
друзья, или родители.