It is the general location setting of "Durarara!!" and is home to the protagonists. It is also home to many myths as well as the infamous "color gangs" that fight for territory in Ikebukuro. Kidnappings occur regularly and are often committed by Yagiri Pharmaceuticals to use in human experiments. Ikebukuro has many strange people, such as the insanely strong debt collector, Shizuo Heiwajima, and the underground doctor, Shinra Kishitani, who lives with the headless rider Celty Sturluson. A gang known as the "Dollars" recently showed up in Ikebukuro, and has grown to an immense size. The headless rider is a myth about a woman without a head that rides a motorcycle that makes no sound and has no headlight, and that she can make objects materialize out of darkness. Another myth has also arisen, known only as the Slasher. A large incident involving the Slasher recently occurred in Ikebukuro, and has caused much strife between the Yellow Scarves who recently regained their leader. It seems that another gang war may soon begin, this time involving the Dollars, the Yellow Scarves, and the army of the Slasher.