Hakugai Fukutsu no Blade Maker

is a Japanese light novel series written by Kiyoshi Amaha, with illustrations by Hinata Momo. The series began publication on November 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
A «Saint Renshi» girl who exposes her naked body in a flameless smithy. Insert the holy sword of the brave (for) into that XX !?

The holy sword that destroys the human enemy "Makina" -it is sanctified using the body of the "Sacred Master" as a fire pot. In other words, everyone needs to expose their bare skin during the sacred training ...

On the first day of transfer to the Holy Ren School, the fallen Holy Renshi, Judas, breaks into the "Holy Renchu" smithy. Judas decides to duel with her, who is furious when she sees her "inserting" her armor. But he had a secret. An incompetent saint who can't even train a knife properly. Its true identity is the strongest warrior who has mastered overwhelming sword skills and various magic.