Zenjirou

Once a researcher within the 7G organization, Zenjirou now lives with the lasting effects of past experiments, presenting himself as a hunched old man whose mind wanders and who can only utter repetitive sounds. Yet the moment he puts on a railway cap, a window of clarity opens for up to five minutes. During that time, he passes on his train-operating skills to the protagonist Shizuru, serving as a crucial supporter who sets the girls on their path to confront the chaos caused by 7G.