Kagurabachi, Vol. 1 by Takeru Hokazono

[Viz] Chihiro's cursed past sends him down a quest of bloody vengeance! Chihiro Rokuhira’s father, Kunishige, is the most famous swordsmith in the land. Thanks to his six enchanted blades, the war that has been gripping the nation ends, and peaceful days follow. After the war, he retrieves all six blades and hides them in the cellar of his workshop—but sorcerers raid his home and leave Kunishige dead in front of Chihiro. Many years later, Chihiro wields Kunishige’s seventh and final enchanted blade on a mission to retrieve the stolen swords! As a young boy, Chihiro trains every day under his father to become a swordsmith. Although different in temperament, the two spend peaceful days laughing and working together. But one day, tragedy strikes… Now Chihiro burns with hatred and sets out to exact revenge. Following clues left behind by a ruthless yakuza organization, Chihiro confronts the Hishaku, a deadly group of sorcerers that may be behind his father’s murder!