"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."
I'll drill the essence of radio 
calisthenics into you!
!سأعلّمُكِ أساسَ تمارين الإذاعة وجوهرها
Ich bring dir bei,
was Radiogymnastik ist.
¡Te meteré la esencia
de los ejercicios de la radio!
¡Te inculcaré la esencia
de los ejercicios de la radio!
Je vais t’inculquer l’essence
des exercices de gym !
Ti trasmetterò l'essenza degli esercizi via radio!
Eu vou te passar a essência
 dos exercícios calistênicos!
Я познакомлю тебя с радио-гимнастикой!