Elves are curious about Japanese culture!? Working adult Kazuhiro Kitase's hobby is just sleeping. Ever since he was a child, he has had exciting adventures in a mysterious other world that he has always dreamed of. One day, while exploring ancient ruins with an elf girl he had become friends with, he unfortunately came across a magic dragon and was burned to death by its breath. When he woke up from the dream, he found an elf girl sleeping next to him, even though she shouldn't have been in his room...