@vx_okd: Train Heartnet "Once known as the legendary 'Black Cat,' the elite assassin of the Chronos Numbers (XIII). He was a cold-blooded killer, living solely by the orders of the organization. However, after a life-changing encounter with Saya, he abandoned his past to embrace his own freedom. Now, he lives as a stray bounty hunter (Sweeper), guided only by his own will and his trusty Hades gun, proving that he is no longer a tool for anyone."