Story
This anime is about a group of people, where all of them "died" which propably means they were really close to death but got revived, that is working as a team of asassins. They are after the big shots of organized crime, those people that get away with everything, because they have influantial friends or other stuff like that. Their organization, Black Label, kills those people, telling them they are like a tumor to society.
After this is made clear, Black Label has to oppose a group, which is later called Syringe, which tries to get a new drug into Japan, which seems to make the user more aggressiv amon other things. You never learn what happened to that drug or to Syringe, since the series just stops in between this storyline.
I didn't even fully understand the difference between D99 and Platinum Lily, if there is any. Those are both names of drugs, but I think D99 could be the antidote to Platinum Lily.
The Plot as is is totally unstructured, or I just don't understand it as it was meant. Sometimes we see the main character, Arashi MIKAMI, with his friend from school, but only three times I think. Otherwise she is totally irrelevant to the plot. Then we have another thing where two idols are going with Oriha NASHIDA, who is an idol herself, to rescue other idols. That is the only time those two side-characters are around. We always get the teaser for some interesting character-development, but then again it is destroyed or left behind.
There were many good built fighting scenes, though, but I think they took much too much time from a ten episode long series for that fighting stuff to really get things done on the other parts. There are so many loose ends in there because they tried to tell me several plots, while the time besides the fighting wasn't even enough for one plot.
Animation
My favorite part of this series. And no, my high rating for animation is not because there are many busty women around and you get really many panty-shots and nude women (at least I assume, since I was watching the censored version). No, I think there were many good fighting scenes in there. They were thought through, they were drawn good, you didn't see too much obvious rendering, it was just well done in that aspect. Sadly I for myself think a decent animation isn't nearly enough to get over a lousy story.
Sound
The sound was okay. I don't remember anything spectacularly good or bad. The few songs that were strewn in were okay, too, but there was not enough music in it for my taste.
Characters
Now the hard part. The characters were awful! I can't remember any character development. Anything important seems to have happened before the series started and in fact I didn't care enough about any character to being eager to know why he or she ended there. Not only was there no development of the characters at all, I had the feeling it was intentional. Every time when there happened something, that could have given any development, it stopped to be important when it was done, save for the kissing between two of the characters almost at the end of the series. There were so many chances to evolve the characters, which were written in by the same people that rejected them afterwards. It was a feeling of "let me have my cake and eat it, too". They wanted to hint development of the characters and then they didn't get it through.
Save for Sayo Hitsugi that is, she had at least a little development at the end of the series, she got rid of her mask. But even there was so much potential in there, you propably could have filled those ten episodes alone with her backstory.
Which brings the most annoying part of this whole thing. It felt too big. If you look on the character page, at the moment it has eleven main or secondary characters, and every one of them, plus at least three of the side characters seem to have their own backstory that has to be told. But there is no place in this series. I assume, without looking it up, that there is a manga or a novel somewhere, where this originated from. Then I would understand what happened there, not that that would make it any better.
Overal
The storytellers just wanted to tell too much of a story in too few episodes, propably using not enough money to do so, too. That lead to a story I don't really get, that is open in every way possible, I don't think there is even one closed storyline here. I had to fight to get through, too, asking myself what this whole thing was about at all. It wasn't entertaining, closer to frustrating. For me, really bad show!