The Almighty Assassin of the Apocalypse

The end of the world is coming, the invasion of countless worlds? Attack on Titan? Ghoul? Resident Evil? Zerg? Planned Parenthood Pioneer Thanos? But what do you care about me, an assassin who has no emotions? In this apocalyptic world where everyone is playing with supernatural powers, I can only be forced to be an all-powerful assassin! Okay, okay, don't worry, I have so many skills that I can't even finish them in seven days and seven nights! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.