Chihiro Konno is the homeroom teacher for Katagiri Kanade's class, teaching Japanese language. He stands 176 centimeters tall, with short grey hair and warm pink eyes, usually seen wearing glasses and a necktie. Born on February 20th, he is a Pisces with blood type B.

His stern exterior initially intimidates some students, yet he shows a deeply caring and supportive nature. When Kanade returns to school after a long absence as a hikikomori, he proactively tutors her individually in the counseling room to help her catch up academically.

Personally, he possesses a strong affinity for sweets and notable skill in cooking. He cherishes fairy tales and piano music. He deeply cherishes children and aspires to write and illustrate fantasy picture books for young audiences.