Shigenobu Yakuma, known as "Yakku," is a second-year center for Yokohama Taiei High's basketball team, wearing jersey number 11. Standing approximately 190 cm tall, he possesses long black hair typically tied back during games or practices, and wears Nike Air Zoom Kobe 1 sneakers.

Yakuma exhibits a foul-mouthed demeanor, similar to teammate Shiraishi, yet balances this with a considerate side, evidenced by actions like assisting teammates during practice, including when Mineta needed help after Keisuke fainted. As a starter for Yokohama Taiei, opponents recognize him as one of the Kanto Region's top upcoming centers.

His exceptional basketball skills feature outstanding jumping ability, allowing him to elevate effectively above the rim while holding the ball. Initially playing power forward, Yakuma operates effectively from the perimeter. His offensive versatility includes proficiency in three-point shooting and hook shots. His attributes rate physical ability and stamina at 10/10, technique at 8/10, mental strength at 7/10, and special ability at 9/10.

During games, Yakuma adopts a competitive yet mentoring approach towards younger players, such as teasing first-year Fuwa Hyou as "Pyoon" and commenting on Fuwa's rare opportunity to play in official tournaments compared to bench-warming freshmen. He actively contributes in high-stakes matches, like the quarterfinal against Kitasumi High, where his presence influenced the team's strategic adjustments.

His surname "Yakuma" translates to "thick clouds," and his given name "Shigenobu" means "heavy faith."