Kanashimi Chimera (Volume)

is the first volume of the Kanashimi Chimera light novel series, written by Rei Rairaku and Illustrated by Mio Yanahara. It was released under the Dengeki Bunko Imprint in February 2006.

Synopsis
The elevator stopped. Jun Yashiro, who has been trapped, is attacked by a strange thing in a narrow box with her three men and women, Makoto Jumonji, Fukaya Mizuto, and Ayaka Hayase. Since that mysterious experience, changes have begun to occur in Jun's bodies. An unhurt body, suddenly recovered eyesight, ghostly eyes, and unfulfilled hunger no matter how much you eat. Kazumi Nanakura, who is said to be a mono-purifier, appears in front of Jun and others who are confused. And he tells. What I encountered in the elevator was a "thing" that eats and lives on humans, and the bodies of the four of them are now fused with that "thing." Received the "Gold Award" at the 12th Dengeki Novel Prize.

(source: Bookwalker JP - Translated)