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--
instead of living as a tool for others, 
I want to live my own life.
سأعيش لأجلي بدل العيش 
كأداة للآخرين
viviría por mí mismo
y no como herramienta de otros.
viviría por mí mismo
y no como una herramienta de los demás.
em vez de viver como uma ferramenta para os
outros, quero seguir minha própria vida.
я бы прожил жизнь для себя, 
а не для других.