Cruel (3) Tsuki no Datenshi

is the third volume of the Cruel light novel series, written by Miyako Narita and Illustrated by Yukinobu Azumi. It was released under the Dengeki Bunko Imprint in March 1998.

Synopsis
The time is 1999. The year when the "God's Covenant" that God helps human prosperity for 2000 years ends. In order to rule the world after that, various forces such as fallen angels, mysteries, and gaidou swordsmen have begun to move toward the final battle. Shun Takigawa, whose "angel power" has awakened, and Toru Shinohara, who was selected as the spirit sword "Genki" of Ya. The two boys, who are involved in the battle for the future of humankind, face their destiny with courage while being embarrassed and hurt !! A psychic action novel woven with mysterious keywords that suggest the end of the century.

(Source: Amazon JP - Translated)