Chinatsu Akagi is a third-year middle school student radiating energy and a sporty spirit. Standing 155 cm tall and weighing 41 kg, she possesses vibrant red hair, brown eyes, and distinctive antenna-like strands that complement her dynamic presence. Her personality blends high physical activity with minimal intellectual engagement, resulting in a carefree and cheerful demeanor. This pronounced imbalance between physical vigor and mental focus renders her largely indifferent to supernatural disruptions caused by her teacher, leaving her unaffected where classmates are disturbed.

She demonstrates significant emotional reactivity, particularly tearing up easily at sentimental moments, and exhibits notable food-focused enthusiasm. Within her class, Chinatsu serves as a source of comic relief through exaggerated emotional outbursts and physical comedy. As a minor narrative presence, she contributes to ensemble-driven humor without central plot involvement.