Chie Arai is the school counselor. Her surname contains a kanji that can reference the philosopher Friedrich Nietzsche. She possesses black hair, brown eyes, and a notably large bust, which draws attention from male students during activities like swimming classes. Professionally, she addresses student issues, frequently dealing with Nozomu Itoshiki's breakdowns and suicidal inclinations. Chie exhibits a dominant and intimidating presence, especially towards males, often forcing compliance through her commands. She utilizes this to compel the fearful Nozomu to perform tasks such as retrieving absent students like Kiri Komori. Her interactions sometimes display undertones of sadism, particularly when rebuking masochistic males, a recurring element in episodic introductions.