The Sacred Blacksmith

The Sacred Blacksmith is a manga written by Miura Isao and illustrated by Yamada Koutarou.

Plot
As the newest head of the prestigious Campbell household, young Cecily Campbell is following family tradition by becoming a Knight Guard of the Independent Trade City of Housman and taking up the family sword. While being attacked by a crazed veteran knight, she was saved by Luke Ainsworth, the Sacred Blacksmith. Alongside Lisa, his assistant, Luke has the power to forge powerful swords capable of defeating the so feared demons. Demons which could once again bring the world close to an end.