9mm Parabellum Bullet brings the sixth album with 15 tracks total, including "Seimei no Waltz," "Hangyaku no March / Darkhorse / Dare mo Shiranai / Mad Pierrot" as well as 10 new ones that all the members composed and produced each other. This edition includes a bonus DVD, featuring a release party held on September 9, 2015 and a guerrilla concert at the ground floor in Tower Records Shibuya.