Cha-Che is the shooting guard, wearing jersey number 2, for the Earth basketball team formed by her wealthy grandfather, Yoshimune. She is driven by his long-standing ambition to lead a human team to victory in the Intergalactic Basketball League. Cha-Che showcases exceptional sharpshooting skills, earning her team spot by winning a shooting challenge against top Earth shooter Maru, including sinking a half-court shot. Her precision translates directly to official games, scoring two early 10-point baskets in the team's first match against the Swallows and proving crucial in pivotal moments like facilitating a comeback victory against the Smoky Queen team. While her background details are limited, her actions consistently support her grandfather's objective. Her narrative function centers on contributing her specialized skills to the team's efforts within the Intergalactic League as a dedicated player and granddaughter, with no significant personal character development documented beyond this established role.