Kanashimi Chimera

is a Japanese light novel series written by Rei Rairaku, with illustrations by Mio Yanagihara. The series began publication on February 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The elevator stopped. Jun Yashiro, who has been trapped, is attacked by a strange thing in a narrow box with three men and women who are on board, 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."