Elf brother as my tool man

Introduction: About the elf brother being my tool: How come my killing blow is immune to this elf?Then I thought about it, really, it turned out to be because he was a loser... Forget it, let him just be my tool! ...Strange, how can this person still thrive after being labeled a "waste" by me?Alas, there is really nothing we can do against him... The perspective of the elf brother: "Sister Angel, there is nothing we can do against me" The Eut Empire of the Stone Continent (Group 1): 1047120308