"When Ikebukuro's underground is set on a collision course, no one is safe. Dollars cofounder Mikado Ryuugamine, continues his lonely struggle to purge his group of undesirables. Former Yellow Scarves leader, Masaomi Kida, returns to the city to make amends for his past. The owner of the cursed blade Saika, Anri Sonohara, seeks the truth from the two boys who keep leaving her in the dark. The three of them used to be the most important parts of one another's lives, but now their secrets keep them separated. With a certain information broker whispering in Mikado's ear, will their friendship survive the color gangs' struggles?"--Back cover.

"This book is a work of fiction"--Copyright page. "First published in 2010 by Kadokawa Corporation, Tokyo"--Title page verso.