Tatsumi returns home after being defeated by Tojo to find that Hilda has returned from the Demon World with the imperial doctor, Forcas Rachmaninoff, and his assistant, Lamia, to help determine the cause of Beel's illness. He diagnoses the illness as King Fever and when Beel was trying to draw out massive amounts of demonic power, he accidentally severed the link between him and Tatsumi and found Tojo similar to Tatsumi and connects to him. Tatsumi begins a treatment to try to reconnect with Beel and enters a dream world through the effects of a Demon World drug that ...