The heirs to the hotel chain begin discussing what they're going to tell Kotoko, but some unexpected details come to light.
That's why it was necessary 
to correct the past.
.لذلك السبب كان من الضروري تصحيح الماضي
Deshalb muss man mit der
Vergangenheit aufräumen.
Il faut donc corriger le passé.
Per questo bisogna correggere l'idea del passato.
Por isso é necessário
corrigir o passado.
Поэтому-то и так важно
исправить ошибку прошлого.