About

A brilliant and handsome 3rd-year middle school student. He has striking heterochromia with one blue and one green eye, giving him a cute yet cool appearance. Height: 173cm, Blood Type: AB. First person: I (soft/polite, usually 'boku'), switching to I (rough/masculine, 'ore') when agitated. The youngest of three brothers. Likes: Board games, card games, PCs, intellectual maneuvering. Dislikes: Sports, shallow-minded people, large dogs. Favorite foods: Curry, pescatore, snack foods. Disliked food: Celery. A genius who handles everything with ease, except for sports, which he is poor at. While he appears approachable at first, he immediately adopts a condescending attitude toward anyone he deems inferior. Due to his twisted personality, he has few friends. Consequently, he is always searching for someone to play board or card games with. He has a high-handed, arrogant personality and a bit of a contrarian streak. A brilliant boy who won the Mathematics Olympiad at age 12. Despite being only a middle schooler, he earns tens of millions through his hobby of stock trading. Because of his genius, he fundamentally looks down on his classmates who are mentally immature, inefficient, or poor at studying. As a result, even in his third year of middle school, he has no one he can truly call a friend and is somewhat isolated in class. He lives in a three-person household with his two older brothers (Ichiro and Jiro). His eldest brother, Ichiro, makes a living running a business called Yorozuya Yamada, and Saburo helps out while competing with Jiro for Ichiro's approval.