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--
You have until eighteen 
years after you're born.
لديك حتّى 18 عاماً بعد ولادتك
Du tötest ihn 18 Jahre nach deiner Geburt.
La fecha límite es
cuando cumplas los 18 años.
La fecha límite es
cuando cumplas los 18 años.
Tu auras jusqu’à tes 18 ans
pour le faire.
Questo entro diciotto anni dalla tua nascita.
Você terá o tempo limite
de 18 anos após nascer.
После рождения у тебя будет
 восемнадцать лет.