Sakurairo BUMP Shinmetori no Kemono

is the first volume of the BUMP light novel series, written by Takehiro Arihara and Illustrated by GUNPOM. It was released under the Dengeki Bunko Imprint in March 2003.

Synopsis
The owner of the antique shop "Mystery Shop" died mysteriously. The corpse is said to have been shredded to the point where it did not retain its original shape and was left in a sea of blood. Police concluded that the damage to the corpse was not torn by a knife, but was the work of a large carnivore. A few days later, a similar murderous body was discovered at the high school where the main character, Sakurako Takayama, attends. A female member was killed in the swimming club room. Sakurako, along with her bad friend Goro Asako, will investigate the mystery of this serial murder case. However, it was an unexpected person who emerged as the criminal! A new sensation mystery presented by an expected newcomer.

(source: Amazon JP - Translated)