Everyone in his Triad gang looked up to him. He was the boss’s favorite pupil, but then in a single night, after he had won so many territorial fights for his gang, he lost everything! Why?
(Source: Easy Going Scans)

A Manga adaptation of the 9th book from the famous Killer Series written by Gibbens(九把刀).

This is a story about an ordinary guy under extraordinary circumstance turning into a psychotic mad killer.