A grudge related to swords, a peerless good sword, a peerless swordsman, a peerless talent, what makes the best sword in the world disappear for no reason, what makes a woman become an enemy of the entire world, and vow to avenge her father. Then this woman turned out to be mysterious, and there appeared an assassin with superb martial arts skills, a miracle doctor from a scholarly family, a magnificent pavilion master... Who is the real avenger?