Yamada Masao
The main character of the story. A second-year high school student attending a prestigious school. A gloomy boy who feels like he has no place at home or school, 2D characters are his emotional solace. One morning in April after the opening ceremony, he is knocked unconscious by two men with what appears to be a gun, and when he wakes up, he finds himself in the "Multidimensional Research Institute."