(Decisive killing + (no) single female protagonist + brainless coolness)
Human beings opened the door to the third world. Human beings thought they could explore the world of higher dimensions.
But unexpectedly, it caused a natural disaster.
I killed all the void creatures with one sword and became a void demon.
I set foot on the dimension of time and space, fighting for a glimmer of hope with all races in the world.
I fought my way out of the battles of all realms and became a real devil and a real guardian!
Yes, very yes