The Witch of Thunder.Haruto Tsukishiro awakens in a mysterious dream world inhabited by strange and powerful entities called Witches, the first of them being Yuko Sakurabe, the Witch of Thunder. Haruto's only sources of companionship are Lily, a white-haired girl that calls Haruto her "brother" and Katsumi Kanzaki, a scientist who has been researching the dream world. Yuko finds Haruto and attempts to convince him to play with her. At first, Haruto refuses, but when Kanzaki almost gets killed, he is forced to accept. His attempts to appease Yuko are for naught, as she attempts to kill him as well. Fortunately, Haruto realizes that any injuries he suffers in the dream world are not real, so he easily survives Yuko's attacks. With Lily's help, Haruto realizes Yuko is actually a sad, heartbroken girl who went to the dream world after suffering a cruel prank in the real world. Haruto helps Yuko come to terms with her pain and allows her to return to the real world. As Yuko wakes up, the dream world produces a blue door that, according to Kanzaki and Lily, will take Haruto back to the real world. But when Haruto goes through it, he is taken back to the room where the episode started. Haruto simply decides to sleep again, hoping to find another way to return home.