Driven by an intense thirst for vengeance against those who had viciously violated and murdered his dear younger sibling, Kousuke Kurono was a determined Avenger. Even in his tender 13 years, he was resolute in his quest to do everything necessary to achieve his goal. After relentlessly pursuing justice for five long years, he finally attained it, yet found himself lost and without direction. Overwhelmed by despair, he utilized the same knife that had delivered justice to take his life. However, a mysterious voice challenged the thoughtlessness of his actions. To his surprise, he awoke to find himself in a completely new world, unlike anything he had ever experienced.
