Böcker i Island in a Puddle-serien i ordning

"A Kodansha trade paperback original" -- Colophon.

Translation of: Mizutamari ni ukabu shima, volume 2.

"Reunited with Nagisa, Minato (in Kuromatsu's body) suddenly finds himself at the scene of a deadly clash between secret criminal mastermind Tsubaki and one of Tsubaki's fellow detectives. Futaba confirms beyond a doubt that something is terribly wrong with the Myojin boy, while Kuromatsu quietly tightens his grip on her"--