Hehe, sweeet! Awesome. I like how you characterized them by their cards.
Though, in my opinion, I don't think a few drops of blood constitutes a mature rating. I seen kid-rated shows on TV have more blood than that (not sure how DBZ managed to have a guy's hand be blown off) O_o The picture isn't gory and doesn't have any explicit sexual themes.
To be honest, I keep my mature rating filter off because people sometimes mark things as mature when their work isn't any sort I would think needed it. XD
Ooooooh, there's blood, that explains the mature rating. I didn't even notice the bloody card until you pointed it out. Anyways, yay! It's colored! And quite well too, I love the clothing and your skin tones are superb >.> *is jealous*