Durarara!! Light Novel Volume 12

Durarara!!x12 is the twelfth volume of the series. As a direct continuation of the previous volume, it contains an interlude, three chapters (7, 8, and 9) and closes with a connecting chapter to the next volume. The twelfth light novel was adapted into part of Durarara!!x2 Ketsu, the third and final cour of the second season of the anime.

Synopsis
Can a monster protect anyone?

Ikebukuro is falling apart. Kujiragi uses Saika to subjugate Shinra, and when the Headless Rider witnesses this, the dullahan becomes a true monster. Masaomi's old enemy Ran Izumii reappears and attacks him. Meanwhile, Saki visits Anri to find out how she feels about Masaomi. Kadota disappears from his hospital room, Celty's head is in someone else's hands, and Shizuo finally comes face-to-face with the one he hates the most...In the midst of all the chaos, what kind of power has Mikado seized-and how does he intend to use it?

Email Threads
Email threads were only available with books purchased at Animate between June 7 and July 14, 2013. Hidden links included with the book required an email address and provided access to one of four email threads:
 * Raira Gakuen Flyer's "Guidance for the Summer Course": Raira High School Sophomore Network
 * Izaya Orihara's "Business Card": Shinjuku Informant's Business Email Address
 * Russia Sushi's "Discount Coupon": Russia Sushi's Email Newsletter
 * Ikebukuro Neighborhood's "Crab Delivery Job Offer Flyer": Awakusu-Kai's Directive