The world's finest Assassin accepts the Goddess' request to assassinate the Hero. After defeating the Demon Lord and saving the world, the Hero will then use his power to destroy the world. The Goddess wants the Assassin to be reincarnated in another world and assassinate the Hero in order to save it. After being betrayed and killed by his client in his previous life, the Assassin accepts her offer in order to relive his life in a new world, but--
Then being reborn in another world 
with the memories and personality
تجعلك الولادة الثانية في عالمٍ آخر
بذكريات وشخصيّة
Dann ist es doch unglaubliches Glück,
mit Erinnerungen und der Persönlichkeit
Por lo tanto, que puedas renacer
en otro mundo con todo eso intacto
Por lo tanto, que puedas renacer
en otro mundo con todo eso intacto
Je te propose donc de conserver
tes souvenirs et ta personnalité
Per cui, rinascere in un altro mondo
mantenendo i ricordi e la personalità
Portanto, isto o torna muito sortudo,
pois vai renascer em outro mundo
Тогда выходит, что тебе повезло, 
ведь воспоминания