Rail, a swordsman, has a childhood sweetheart, Lilia, who is a member of the same party. When he decides to marry her and is about to give her a ring, he witnesses her being seduced. Disappointed and angry, Rail leaves his party and leaves town in search of a place to die, but is attacked by a dragon in an unexpected place. In order to protect a parent and child who were too late to escape, Rail prepares to die as he fights the dragon, but in the midst of this desperate situation, his hidden and amazing talent awakens! Meanwhile, Serah, a solo adventurer and girl known as the "Ice Witch," is curious about Rail's unfathomable power and tries to contact him, but... A fantasy of a swordsman's rise to power in which the secret techniques of a swordsman aiming to be the strongest explode!!