Durarara!!x9 (デュラララ!!x9) is the ninth volume of the series. It was published on February 10, 2011, and is 329 pages long.
The ninth light novel was adapted into part of Durarara!! x2 Ten, the second cour of the second season of the anime.
- Prologue: The Classmate
- In a Dark Place
- Chapter 1: The Information Broker
- In a Dark Place 2
- Chapter 2: Iza-Nii
- In a Dark Place 3
- Chapter 3: The Flea- Part1
- In a Dark Place 4
- Chapter 4: Vice President of the Club
- In a Dark Place 5
- Chapter 5: Orihara Izaya
- Epilogue and Next Prologue: Me
Info from amazon.co.jp