Based on the period drama "Sazen Tange" by Fuubou Hayashi.

AB does not know his past. He was called "Secretary Bird" or "Snake Killer" in a certain intelligence service, but he lost all his memories in an accident. Since then, AB has been wandering around the world in search of his lost past. There are only two clues: a faint memory of being called by the name of a strange bird and a vivid sexual experience with a beautiful woman wearing glasses. AB's endless journey continues as he's confronted today by another incident... *Notes: \- Included in volume 2 of Lupin Kozou. \- Due to creative differences between Monkey Punch and Kazuo Koike, the manga ended after three chapters.*

Born under a cursed star! Kagyou Bouhachi was always destined for a drifter's life! Life is hell, and hell after death! This is a ruthless world where the eight virtues have been forgotten. (Source: BookWalker, translated)