An alien parasite inside a cat ambushes Hikaru. Unbeknownst to it, he's a psychopath who killed his mother and can reverse-hack the parasitic cells, taking its body and powers for himself. Evolving from absorbing other living organisms, he begins changing as he becomes sensitive to emotions. Ironically, an alien made him more human than ever. Dragged into an ever-growing war between parasites and humans, will Hikaru become the dark hero humanity needs? Or will he fulfill his dream of world domination?

At the same time, the Master System and its power are in peril as a result of Hikaru's actions. A simple nobody named Elijah reincarnates with the Hero System and is sent back in time to restore order to the universe.

Read between the Dark and light chapters of Parazyte, explore the Naruto and Sasuke type dynamic of the two characters, the vast world-building and in-depth character development with rich side characters (sprinkled with 2D characters for fun). 

Warning: Book recommended for 18+. Realistic violence and death is the theme. Hero chapters are sometimes light-hearted but often contain sad realities.

The world shakes under their overwhelming power. The fate of the world depends on who becomes a God. 

Readers from a parallel universe can affect the storyline with their quantum tremors.

OP Parazyte

Over half of the goblins who had surrounded Elijah had died. Since he was covered in blood, they didn't notice that he wasn't bleeding at all. Many of them thought he was reaching his limit any moment now, but a few of them saw something else. 


The few of them saw an unstoppable killing machine and as more goblins were slain, the others shared the same terror. 


The boogieman of the goblins. The Shaman would tell them stories of the Goblin Slayer around a campfire in the woods to train good behavior. Those who would break the laws of the tribe would attract the goblin slayer here. 


Some of them didn't believe the story while others thought it was exaggerated. Now they thought it must be true. They had broken many of the laws and now the Goblin Slayer came to exterminate them! 


[You have earned the title of Goblin Slayer!] 


71 - Goblin Slayer