"After being badly wounded by Elsa, Subaru somehow survived and awoke in the mansion of Margrave Mathers, in the Kingdom of Lugunica.

Subaru now lives and works in Roswaal's mansion, working with Ram and Rem, and finally getting Emilia to agree to a date with him. But the day of their promised date never comes as Subaru keeps going back to the day he first awoke in the mansion. He's confused at the thought that he Returned by Death despite having no memory of experiencing anything deadly, but he's determined to repeat his previous actions up to the point of fulfilling his promise with Emilia."
If you agree to it, I'll forget 
everything you just said.
إن وافقتِ عليه فسأنسى كلّ ما قلتِه للتو
Wenn du darauf eingehst,
vergess ich die Sache komplett.
Si la aceptas,
olvidaré todo lo que dijiste.
Si la aceptas,
olvidaré todo lo que dijiste.
Si tu l’acceptes,
j’oublierai toute cette histoire.
Se accetti, dimenticherò quello che hai detto.
Se você concordar com ela, eu vou
 esquecer tudo o que você disse.
Если согласишься, 
я навсегда забуду об этой истории!