I officially have a new favorite manga series. Bloody Monday is awesome. It's a tense techno-thriller full of suspicious characters, double agents, and a page-turning mystery. Good for fans of the tense interplay between L and Light in Death Note, but it is not a fantasy series (so no demons, ninjas, spells, etc). While some of the hacking is a bit over-simplified, the drama as the stakes are constantly raised completely pulled me in.