"A sword engraved with sorcery, a demon sword──
A bloody, pitch-black swordplay action revenge drama!!"

Chihiro, a boy whose father is a swordsmith, spends every day training diligently to become a swordsmith under his father.
A father without a clue and a son with no manners.
I thought my daily life, filled with laughter, would continue forever... but one day, tragedy struck...
A relationship marked by bloodshed and a daily life that cannot be returned to.
The boy burns with hatred and holds a burning determination in his heart… .