Kiokushi Series

is a Japanese light novel series written by Chikashi Yoshida, with illustrations by 3. The series began publication on December 10, 2004 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
In Yokosuka, a city where shipping is open, there are people who make strange jobs. Limited company "memory shop". A young and beautiful woman, Misa Mashu, her son, Makoto, and her employees are the only two. Its job is to falsify people's memories by making full use of special skills. Naturally, it is an illegal act, and "limited company" is self-proclaimed. Those who work behind the scenes are still today. "The target is the Imperial Japanese Navy Chief Officer. Class Colonel. The course is absolute death or selective death." Makoto gets into the target's permission at the behest of Misae. At that time, when it seemed that he was steadily doing his job, a second assailant appeared ...!? This was the beginning of a fierce battle involving Mashu's mother and child.