baru Natsuki is an unremarkable high school boy who lives an unremarkable life in Japan. Of course, all that's about to change now that he's woken up ain a fantasy world for the first time! There's something strange about this, though. Everyone seems to already know him, and for some reason, they're all expecting him to figure out how to overcome the challenges of this weird tower. Who is this fantastical hero they all see when they look at him, and why does he sound nothing like boring old Subaru?