Origin
Creation
Masa’aki Oki is an antagonist character in the Triage X series that was created by Shoji Sato. It began serialization as a bi-monthly series in Fujimi Shobo’s Monthly Dragon Age in 2009.
His first appearance was in Triage X Volume 3 CH. 12 “CASE: 3 Midnight Guerrilla III – Clash of Killers”.