A Corpse Brother fanfic. It borrows characters from Corpse Brother, but the plot has nothing to do with the comic. Original-work fans, please don't flame me. If you don't like it, just read something else.
Killing Aura power system
Essence: A berserk branch of inner power. It can be accumulated quickly through killing and slowly replenishes on its own over time.
Human Tier: There is no Human Tier. Only those with the bloodline of a God of Slaughter can awaken killing aura. It is activated by killing on a massive scale, allowing the aura to be stored within the body. As a berserk branch of inner power, it starts directly at the Earth Tier once awakened. In peaceful times, mass slaughter is forbidden, so it remains dormant, leaving the person no different from an ordinary human.
Earth Tier: Can only form simple weapons such as blades and shields, or imbue one's fists and weapons to deal greater damage. Without proper moves or techniques, it is consumed extremely quickly and is difficult to aim accurately.
Heaven Tier: Can form wings from killing aura for brief flights, unfold a killing aura domain to suppress enemies' minds and weaken their strength, and use manifested killing-aura techniques such as slashes and hidden weapons, along with various ranged skills and doppelgangers.
God Tier: Killing aura becomes tangible and can leave the body to form independent clones of killing aura. Attacks carry a soul-shaking force and can damage the source of immortal beings.
A different corpse brother, worth watching.
What does the author write next? Long You was thrown into the system space without even getting out of the coffin. Could it be unlimited streaming?
I wrote it myself, so of course I give it a five-star rating.