Chinatsu Nishio  

, 西尾 千夏

Chinatsu is a sprinter on the track and field team along with Akane and Mamoru Takizawa, collectively known as the "Third Year Track Trio." Despite being young and innocent, she is friendly towards everyone and can lift anyone's spirits. Her popularity among boys and girls stems from her cheerful demeanor. Occasionally, she expresses a desire for something that someone else possesses.