Iida and two other representatives of the Okura leisure company meet with a ride developer Kiera who has come up with a new thrill ride. Upon entering a large box that Kiera calls the greatest motion simulator ever made, Iida and the others are terrified upon finishing the ride and agree to pay her for the device. Kiera agrees to let them use her creation on the condition that she hosts a nighttime event for it within a week's time. The following night, confused as to how the box works, Iida returns to the development lab to find out Kiera's secret, but she spots him. She decides to subject him to the box's true abilities, scaring him to death by sending him into the Demon World and then transforming him into a sphere that she eats. The next day, Raiga has just explained to Mayuri the difference between fear and terror, when he and Crow are alerted to the presence of the Horror Profundes. The two Makai Knights are told that they must stop her from feeding, because she sends several humans to the Demon World in order to do so. They track Profundes down to Kiera's ride, with Kiera revealed to be the Horror's host. Crow drives away the crowd of onlookers so they are not sacrificed as Raiga battles Profundes's true form within the alternate dimension on the "thrill ride". Raiga as Garo manages to slay Profundes in her true form, but he soon finds himself dragged down into the Demon World, with hundreds of Horrors swarming around him and dragging him in. Crow arrives in the knick of time to save Raiga from being overwhelmed, and they return to the human world safely. The next day, Mayuri decides to try out one of the real thrill rides at the amusement park, and Raiga confides in Crow that he never before experienced true terror like that.
