Title: Juuhime-Phantom Pain, 銃姫-Phantom Pain, Gun Princess-Phantom Pain
Author: Takadono Madoka
Genre: Action, Fantasy, Shounen
Length: 3 volumes (Ongoing)
Joint: Twisted Mist
Koji was always called good-for-nothing by Mateliya. He is so weak that he cannot even pull the trigger of his gun. But what no one knew was that he had a special power within him which only Mateliya can control. Thus begins the adventure of the contract of the boy and his master to save others.
Volume 1 Scanlated by Twisted Mist