Nano Machine

Chun Yeo-woon, the illegitimate son of the Demonic Cult's Lord, has spent his entire life at the bottom - despised, hunted, and left to die by his own clan. On the eve of his entry into the brutal Demonic Academy, a mysterious visitor from the future injects a nanomachine directly into his brain. Armed with technology centuries ahead of his time in a world ruled by martial arts, Yeo-woon begins his bloody climb through the Cult's ruthless succession war - where only the strongest survive.