Chiyoku no Karyuudo

In the blink of an eye, his blissful days with his beloved little sister are stolen away by a merciless "being." Now, with nothing left but rage, he vows to exact vengeance. Armed with a sword forged in the flames of his hatred, he sets out on a relentless journey—one that will test not only his strength, but the very limits of his humanity. What awaits a man who has surrendered his heart to vengeance?