Takayasu Higishino, a sharp-witted private detective, thwarts an attempted kidnapping of Ayane Akimoto, sparking an alliance rooted in deception. His uncanny resemblance to Ayane’s brother Shingo—presumed dead in a suspicious car accident—fuels her plea to investigate her family’s potential role in his demise. To infiltrate the shadowy motives behind Shingo’s death, Takayasu assumes the brother’s identity, exploiting their likeness to probe ties between the fatal crash and Shingo’s inherited fortune. As he navigates a web of familial intrigue, his interactions with Ayane and her circle blur the lines of trust and artifice. The investigation’s stakes hinge on his ability to maintain the charade, though his personal history remains veiled, his motives anchored solely to unraveling the truth within the confines of the case. The narrative unfolds entirely within a single 28-minute story, with no extensions into sequels or expanded adaptations, framing Takayasu’s arc as a tightly coiled dance of impersonation and revelation.