Durarara!!
Utterly Alone
S1 E4:
People throughout the city speak of an urban legend known as the "Headless Rider." A surprising number of people have personally witnessed it speeding down the streets on a jet-black motorbike with no license plate. It is, without a doubt, a mysterious being that can meld simultaneously with the darkness as well as the hustle and bustle of Ikebukuro. But does anyone know the true form of the Headless Rider? One man, Shinra, ponders this mystery while the Headless Rider itself continues to wander the city, in search of the whereabouts of a lone elderly painter.