Cao Yu, following the Valentine's Day trend, decided to have a romantic chat with his goddess that evening. Unexpectedly, he was transported to the world of Detective Conan and accused of being the real culprit in a case—a fate worse than Dou E's (a legendary injustice in Chinese history). That very night, while awaiting trial in detention, Cao Yu awakened the Five-Star Good Citizen Achievement System, gaining the initial reward of the Bomb-Bomb Fruit ability and successfully escaping. With the unlocking of new achievements, he also fused with the Wolf Brother card. To make money and find a scapegoat, Cao Yu accepted Gin's invitation to join the Black Organization, thus embarking on a one-way journey of playing with bombs. Vermouth: See that? That's my man! Yukiko: Believe it or not, Cao Yu and I are just friends. Ran Mouri: Shinichi, don't call me anymore, I'm afraid Cao Yu will misunderstand. Gin: If you have the means, what's wrong with being arrogant? Shuichi Akai: That's the only target I can't hit. Cao Yu: Building a career is important, but I have to take care of many delicate women. It's not that I'm lustful, but I can't escape these romantic entanglements. Become a lackey? Ha! I am the king of the Detective Conan world!