Collaboration between "Assassin System & I'll become a villain in my next life" I'll become a villain in my next life vol.8 Assassin System vol.2 The continuation of the story wherein the whole world knows and acknowledges the existence of Subject no. 099, Ragnarok class Riruko, Kaido, thus deeming him as a dangerous existence. Deemed by the G.E.N.O.S organization as a target to kill, they then bounty him about 500 billion on his head, thus making him the most wanted man in the world. Having the G.E.N.O.S organization personal Russian mercenary group hunt him down, Kaido was then met an unfortunate event wherein he came face to face with another protagonist in another world

A remarkable man dies tragically while trying to harness a new source of renewable energy. He finds himself reborn in a mystical and strange world where there is little to no scientific development and the societies of numerous races were all built upon the wonders of magic. What will happen when he, a man from earth tries to fuse the powers of both Magical and Scientific Civilizations in his pursuit of truth and knowledge? (Frequent updates)

Damien is now enjoying his new life in another world after going through some trial and errors like being a wanted criminal and being hunted down by the kingdoms of the world. With all that settled, Damien can now relax and not worry about any more trouble. Only that's not the case. Despite getting a better life than his previous one, the Champion of Darkness is surrounded by more and more trouble by the day. Not only that, but it seems an evil force is lurking through the shadows, trying to cause some chaos. What will the Champion do when his peace and quiet are being interrupted by some unknown enemy?