TV-Series
Description
Eri Kagurazaka is an English teacher at Jindai High School and serves as the homeroom teacher for class 2-4, which includes the series' main protagonists Sousuke Sagara and Kaname Chidori. She is a woman in her mid-twenties who is a graduate of the same high school where she now teaches, making her a senior to the school's health teacher, Kozue Nishino.

In terms of personality, Kagurazaka is fundamentally a kind and understanding educator who demonstrates a genuine willingness to put the interests of her students before her own. This dedication is most notably illustrated when she confronts armed agents to prevent them from taking Kaname Chidori, showing considerable personal courage in a dangerous situation. Despite this underlying compassion, she has a notable temper that frequently emerges whenever she discovers that Sousuke Sagara is responsible for the various disasters that regularly befall the school. Unfortunately for her, she is very often a direct victim of these incidents.

Her role in the story is primarily defined by her unfortunate position as Sousuke Sagara's homeroom teacher. His hyper-vigilant military mindset and tendency to misinterpret everyday situations lead to a constant stream of chaos and property damage that directly affects her. She has been wrongly accused by Sousuke of being a murder suspect, been caught up in a biological outbreak that caused her clothes to disintegrate, and had her newly acquired car completely dismantled by him during a search for explosives. On another occasion, she wandered onto the school roof and was terrorized by a white tiger that Sousuke was keeping there, an encounter that produced the loudest scream of her life. Despite this relentless onslaught of trouble, Kagurazaka displays remarkable tolerance. She once held onto a letter of resignation that Sousuke had secretly submitted, refusing to accept it, and continues to worry about his well-being, demonstrating her fundamental good nature as a teacher.

Regarding key relationships, beyond her professional connection with her students, Kagurazaka is romantically involved with Iori Mizuhoshi, the art teacher at the school. Their relationship develops in an awkward and humorous manner, including a misunderstanding caused by Sousuke that initially hurts her feelings. The relationship ultimately progresses, and it is confirmed that they later marry and are expecting a child. She also maintains a friendship with her junior and fellow teacher, Kozue Nishino, though this relationship has historically involved her being the victim of Kozue's mischievous pranks.

In terms of development, Kagurazaka evolves from simply being a beleaguered teacher to a more developed character with her own successful romantic subplot, culminating in her marriage and pregnancy by the final volume of the story. As for her abilities, she is noted to have a surprisingly large appetite, capable of eating four servings of sirloin steak on a single date. She also has a habit of exclaiming "Lord" when under extreme stress, which might suggest a Christian faith, though this is not explicitly confirmed.