Ryuugamine Mikado is a boy who longs for the exciting life of the big city. At the invitation of his childhood friend Masaomi, he transfers to a school in Ikebukuro. Masaomi has warned him about people he doesn't want to cross in the city: a champion fighter, an informant, and a mysterious gang called "Darazu." Nervous from Masaomi's stories, Mikado witnesses an urban legend on his first day in the city, the Headless Rider astride a black motorcycle. From then on, the existence of supernatural cases and a gang called the Yellow Turbans will rise to the surface, and Ikebukuro will pushed to the breaking point.
Episode 1 was released english subbed a couple of days ago, and as far as I know, there's been three scanlated chapters of the manga online. I thought episode 1 was great (can't get enough of that OP!) and the manga's pretty good as well.
I'm definitely sticking with this one.