Skullkiller Jaki-Oh

スカルキラー邪鬼王

Updated July 2026

Skullkiller Jaki-Oh is a completed Action, Gore, Mecha manga (1990). Read it online free on XOmanga.

The genius scientist Heihachiro Shimamoto created a machine called the S.O.C. (Self-Organizing Chip) that functions just like a living organism. Though it was a groundbreaking invention—so much so that it attracted the attention of industrial spies—he was unable to control it, and the S.O.C. began to grow to gigantic proportions on its own. Around that time, Louis Iona XVIII, the leader of the Mu Empire who was supposed to have sunk to the bottom of the ocean, launched an invasion of Japan.