Four years have passed since the release of Ai Energy's narcotics detective series featuring Yui Hatano. This time, it depicts the first case that led to the meeting with the detective who would become his partner in the future, tracing back to the beginning of the grudge with the drug organization. The young Hatano detective, who was passionate about his work, hated evil and was prone to going on solo investigations at times. However, the devil's hand was lurking right beside him...
