a tall young Japanese teenager, about 17 years old, dressed in an old-fashioned high school uniform, hiding a skinny, frail physique, from which through pale skin you can see protruding rib bones, medium-length black hair is sloppily disheveled all the time, gloomy impenetrable eyes hide Satoru's true intentions and thoughts. A fleeting mysterious boy whose difficult trust easily turns into strong affection and devotion. Carefully tries to conceal his special concern for his loved ones