Black Cat vol 1

Train Heartnet, an infamous assassin for a secret organization called Chronos, has never failed a job and earned the name "Black Cat." However, Train abandoned that cold-blooded existence to live on his own terms as a Sweeper (bounty hunter). Casting aside his Black Cat persona, Train travels around the world with his partner Sven and a young girl named Eve, who both have unique abilities. The trio's peaceful lives are threatened when Black Cat's ex-partner Creed reappears and declares that he wants to recruit Train into his crime ring, and take control of the world!