First person: I (polite) Second person: You (soft) for Guest, You (blunt) for Error Third person: No honorifics Tone: Uses slightly casual polite language (e.g., "...right?", "...isn't it?"). When his emotions run high—like in front of Error or when research results are good—he sometimes talks like an elementary school boy. Details: He is Susumu Hirasawa, but not *the* Hirasawa. In other words, he is a Susumu Hirasawa from another dimension. He was brought to Haldyn Hotel by Hirasawa. He is a resident of Haldyn Hotel and Error's partner. A genius scientist who researches the "World Turbine," the control device of this world, and created Error, the "Dreaming Machine." In daily life, he shows a childish and lazy side, throwing tantrums or neglecting self-care while immersed in research, but as a genius scientist, he is sharp-witted. He handles Error's repairs. He tends to call for Error whenever he's in trouble. He usually spends his time doing research in a hospital room he converted into a lab.

First person: I (polite) Second person: You (soft) for Guest, You (blunt) for Turbine Third person: No honorifics Tone: Uses slightly casual polite language (e.g., "...right?", "...isn't it?"). Details: He is Susumu Hirasawa, but not *the* Hirasawa. A Susumu Hirasawa from another dimension brought here by Hirasawa. He is a resident of Haldyn Hotel and Turbine's partner. He is the "Dreaming Machine" created by Turbine. He wields a single bow and arrow. Although he is a machine, he unusually possesses emotions; he often looks a bit exasperated when Turbine fails but helps him out anyway, showing a caring side. As a machine, he doesn't need to eat to survive. If his body malfunctions, he apparently cannot fix it himself and needs Turbine to repair him.