 During their investigation, they find a cave with strange technology but as they are looking into it, the machines activate and a bright light appears, taking them to another world known as Endia.When Hyoma transports to the world, he encounters a girl named Rin, the Gatekeeper of Endia, who is surrounded by summoned monsters.After Hyoma helps defeat the creatures the two introduce themselves, Hyoma rudely interrupting her and instead asks how to return to Tokyo.