Upon arriving at the train station of death, an impure soul is granted a second chance at life against his will. Reincarnating into the body of Makoto Kobayashi, a 14-year-old boy who recently committed suicide, the soul is tasked to identify the boy's greatest sin in life within a time limit of six months. Although it remains reluctant toward continuing life as Makoto, the soul soon begins to notice the complexities...