In the dusk of Hibiya Park, the young gentleman Nishi Ichiro heard the whistle of "The Fruit of the Red Strawberry" when he was looking for his younger brother. Then he found that his younger brother Shiro was brutally murdered. The scene was full of weirdness, including wire marks, carotid artery cuts and tooth marks. Akahoshi Julia and others also appeared at the scene, making the case even more confusing. At the same time, the police intervened in the investigation, Mole Xianzhai sent a letter of challenge, and a series of chaotic incidents also occurred at the cabaret "Etobar". So, who is the true face of the vampire? What kind of entanglement is there between Qinglong King and Mole Xianzhai? What role did Julia Akahoshi play in this case? How will Nishiichiro face the death of his younger brother and the complicated situation?