In a certain place, there was a yōkai called Takurō-Bi. Since he burns everything he touches, Takurō-Bi has lived a life of solitude away from both humans and yōkai. One day, Nezumi-Otoko approaches Takurō-Bi and offers an opportunity to do business in the human world. Upon hearing this, the lonely Takurō-Bi becomes ecstatic and decides to cooperate. Nezumi-Otoko produces an attraction at a theme park called BiBiBi Fire, which immediately becomes popular. Takurō-Bi was instructed to never leave the staff room at night. One evening, he couldn't endure the loneliness any longer and leaves the room on his own. Outside, he meets Pigu, a mysterious robot. They got along with each other quickly and strengthened their friendship, however...
