Kosuke Kuro is a man driven by revenge. After his twin sister was brutally murdered, he dedicated five years of his life to exacting vengeance on her killers. But after achieving his goal, he finds himself without purpose, attempting to end his own life. However, he awakens in a different world, one where those who suffered misfortune in their past lives receive powerful stat boosts. This is a story of a man's second chance at life, his journey in a new world, and the unexpected path he forges.