Tsubasa enjoys creating unique inventions, although many of them fail and cause explosions in the student council room. Despite his towering height, which made him stand out among his peers, Tsubasa was abandoned by his biological parents and adopted by his grandparents on his mother's side. He shares a strong bond with his grandfather, inheriting traits such as inventiveness and laughter from him. Although he is part of the student council, Tsubasa focuses primarily on developing his inventions rather than engaging in council activities. His fear of happiness stems from the belief that if he experiences joy, it may eventually fade away, leaving him worse off than being unhappy.