Yagate Saikyou no PK Killer (Shokugyou: Shounin)

Nishiki, a young salaryman and video game addict, belongs to the merchant class in his virtual reality RPG. One day, the players in his own guild decide to kick him out because he's no longer of any use to them. Disillusioned, he decides to embark on one last quest before quitting. A thirst for battle is born within him, unlike anything he's ever known! Note: Four extra chapters are included.