Durarara!!, Vol. 12 (light novel)

"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"--Back cover.