This is so far the most awesome manga I have ever read in my life. There is a lot of good mangas that I really enjoy but this one is just epic.
I like almost everything, from the story to the art concept.
There's a lot of things I LOVE from this manga, the most important is that really makes me feel excited! the whole week I went to sleep thinking in "What the hell is going to happen next..." during the day, at my work I continuosly stopped thinking in who to resolve the puzzle... so I think the whole plot is awesome, both writer and artist are great to create such a interesting and umpredictable characters and make me feel like this.
And of course there's some things I hated of this manga:
The complite manga was quite... machist. Well... I'm a girl and I felt insult by most of the female characters. Totally superficial and stupid. Doing everything in the name of 'love'.
If you like action, puzzles, suspense and yaoi (sorry but I have to say this, YAOI lovers will feel delighted with this piece of work) so, go a head and read it right now! and then watch the anime :)