The Desperate Revival is a story-arc that appeared in both the 日本漫画 and the anime. In the anime, the arc consisted of episodes 188-193. In the arc, it's apparent that Ran once again comes to the conclusion that Shinichi and Conan are the same person, and after Conan is shot 由 a group of thugs in a cave, he decides to tell her the truth. However, with the help of Heiji and Haibara, he is able to convince Ran that Conan and Shinichi are not the same. Plus, Haibara has created a prototype antidote for him, and he is now Shinichi! However, the antidote does not last long, and leads to heartbreaking...

The Case
Conan along with Heiji, Ran, and Kogoro visit the Isle of 《美人鱼》 looking for Saori Kadowaki, who had sent a letter to Heiji asking them to save her from being killed 由 a mermaid. In secret Heiji confines to Conan that the letter was meant for Shinichi despite being send to Heiji's address. But when they try to look for Saori she has been reported missing. They decided to talk with Saori's childhood friend Kimie, who is the elder's great-granddaughter. Rokuro Fukuyama the fisherman is Toshimi's fiancé. Those two along with Naoko, a 商店 clerk, are also childhood 老友记 with Saori....