Things come to a head between Rena and Chizuru, which reminds Arata about a traumatic experience in his past.
So she thought she'd take care of it for you.
.لذا أرادت أن تعتني بذلك من أجلك
Also wollte sie für dich
darauf aufpassen.
Elle a décidé
de le prendre au cas où.
per cui l'ha presa in custodia lei.
Então ia cuidar dela para você.
Вот и решила позаботиться о нём.