玉山雄大

Once, there was a man feared above all as the ultimate hitman. His codename was "Nightshade." A master of a thousand lethal techniques designed to sever the human nervous system, he was a phantom who stripped his targets of their five senses before delivering the killing blow. To the criminal underworld, he was the undisputed "Reaper." But that man is no longer in this world. Choosing to defy his orders to protect a single young girl, he was mercilessly eliminated by his own organization. Seventeen years have passed since his death... and no one could have possibly imagined the truth. The legendary Reaper has been reincarnated and is currently living an ordinary life as a high schooler. Now, it is one teenager up against an army of elite assassins armed with deadly, supernatural "Traits." To rescue the girl who remains imprisoned by his former syndicate, the Reaper is about to wage a one-man war against the largest dark organization on the planet!

Born into the Valgred assassin family—feared across the battlefield as the absolute reapers—Glenn is cast out into the freezing wilderness by his own father for being a sickly failure who cannot even train. Rescued from the brink of death by Emperor Willfoen Thorngrave, Glenn dedicates his entire life to serving him, eventually becoming the legendary hero who slays the Five Demon Kings and ends the war. However, his unyielding loyalty is met with cold-blooded betrayal when the Emperor dispatches nine mysterious assassins to murder him. Waking up thirty years in the past, Glenn retains all his ultimate martial techniques, vast knowledge, and even the absorbed powers of the Five Demon Kings, setting out on a path of unprecedentedly swift growth and vengeance.