9mm Parabellum Bullet brings the first single in 2015 featuring four songs each produced by a different member. Comes with a bonus DVD featuring four songs "Hangyaku no March," "Dark Horse," "Dare mo Shiranai," and "Mad Pierrot" performed in front of their fans for the first time at their concert "Chaos no Hyakunen vol.11" held at Zepp Namba on June 19, 2015 (uncut versions).