Once upon a time, there was a tragic war, in which the power of the devils was involved. After the war, the devils' power was banned and the world was restored to peace. Cecily Campbell is a knight, who has been looking for a blacksmith to repair her old sword given by her father. One day, she saw a man fighting with a ruffian who used the tabooed devil's power. The man defeated him with one blow of his weirdly shaped sword. The man turned out to be a blacksmith called Luke. The fateful encounter was the beginning of the adventure.

Seiken no Blacksmith was published in English as The Sacred Blacksmith by Seven Seas Entertainment from May 21, 2013 to July 11, 2017.