Age: 18

Birthday: July 29th (Leo)

Height: 178 cm

Weight: 66 kg

School: Kaijou High

Number: #4

Position: Point Guard

Hobby: Playing guitar

Motto: Steady progress; rapid advance

The captain of Kaijou's basketball team, Kasamatsu is a nationally credited point guard. Possessed of a short temper and often exceedingly serious demeanor, he can become quickly enraged over the antics of his teammates, Kise in particular, and often vents his feelings with sudden fits of violence. As he takes his responsibility as team captain very seriously, he is extremely devoted to his team and does his best to trust in their abilities and lead them to glory.