Cruel (4) Hangyaku no Tenshi-tachi

is the fourth 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 September 1998.

Synopsis
December 24, 1999. During the year 2000, the "God's Covenant" that God helped human prosperity came to an end. The mysterious people who have begun to destroy the ideal city of New Tokyo in an attempt to rule the earth. The enormous power of the sealed world that emerged from another dimension. Shun Takigawa, whose "angelic power" has awakened, and the warriors of Yu Shinohara and Yashio, who are the warriors of Yashio, will challenge the final battle. What is the fate of the boys !? What is the mystery of the moment that is unraveled !? The psychic action novel that weaves with mysterious keywords that symbolize the end of the century is completed here.

(Source: Amazon JP - Translated)