Wow. I just love this!
From the looks of things this will be a seinen anime with all the dark tones and hard action obviously visible to the anime.
First thing I’d say is that I loved the first action sequence where young Jin beats up the three guys to save the lady because it was well executed and it was so beautiful. The second is which that this first episode was tinged with drama which has a small bit of cliche touch into it (you know, that rich kids shouldn’t be hanging out with poor kids kind of thing) which was beautifully executed and drew me to the anime.
Looking at the characters, most of the central characters has some sort of emotional wound; Jin lost his grandfather, Kanzaki is guilty of his past misdeeds and I assume Akemi is having son troubles. In a seemingly dark story like this, the characters fit very perfectly as the drama that revolves around them balances the bloody action of this anime.
The action and the drama of the first episode drew me into this. I’m very happy that Spring 2012 has something seinen to offer. I’m definitely watching this.