Black Cat is a manga/anime about a former assassin named Train Heartnet who is a bounty hunter. He then gets tangled up with his former partner's plans on talking over the world and he wants Train to join this organization he's making. More info here. You can read the manga at Mangafox or OneManga and the anime you can find it at anime-sub and CrackAnime.
Both the anime and manga are different in terms of events, when the characters meet and their interactions. For instance, in the manga two years have passed since Train left being an assassin while in the anime the events start on his last days as an assassin. Both versions are great, but I recommend the manga because there's a lot more action there and also more character development.
x3 One last tale from the grocery store, because I got promoted to a position where I can't goof off like I used to.
The produce department's floor was cleared off of all the tables so it could be waxed. I thought it would be a good idea to ride a grocery cart across the floor. So I get a running start, jump onto the cart, and sail along for a few feet before the cart's wheel gets stuck on something and I wind up with a grocery cart handle in my stomach. XD;
But yes, I now has promotion, so tomorrow night's going to be my last night dealing with the strange underbelly of a grocery store.