Kazuto Kirigaya and Asada Kirigaya have been living peacefully with their daughter Sachi Kirigaya, happy with no problems in the world. Until one of their ex-friends who tried to kill them has risen up from the shadows to show her dark side and release the Darkness Within. Will Kazuto and Shino make it out of this one alive? Find out in the epic story. ~A Sequel to The Blackswordsmen and the sniper