108 Seiden - Tenpa Mugen no Valkyria

is a Japanese light novel series written by Oumi Kadou, with illustrations by Mirai Denki. The series began publication on December 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Can the boy overturn his fate by helping the 108 chastity maidens ...?

A long time ago. It is said that 108 demons fell from heaven and destroyed the country. And now again, the demon dwells in the 108 virgins, giving them tremendous abilities. At the behest of the emperor, who considered them a threat, Yan Qing, the main character, wields power as a warrior to subdue the 108 war princesses. However, before long, they learned the truth.

A bloody and exciting fantasy war record that depicts the activities of boys and girls who resist unfortunate fate!