TV-Series
Description
Kasumi Hirayama is a character from the anime Handa-kun. She serves as the librarian at the high school that the protagonist, Sei Handa, attends. Information about her life prior to the events of the story is not detailed, but her role is established through her duties managing the school library. She is a student herself, not a staff member, and performs her library duties during lunch breaks and after classes.

Her primary defining trait is her intense romantic crush on Sei Handa. Her personality around him is characterized by extreme shyness and nervousness, to the point where her behavior aligns with the hajidere archetype, as she is easily flustered and embarrassed in his presence. Despite this shyness, her motivations are driven by a desire to attract his attention and affection. She demonstrates this by using her position as a librarian, going so far as to order many books on calligraphy specifically for Handa, hoping to appeal to his interests. On one occasion, she even hid a romance novel among the calligraphy books, hoping he might understand her feelings through its story.

In the story, Kasumi's role evolves from a secret admirer to a more active, though still background, participant. After an incident where she is subdued by a group of Handa's fans known as "ERASER," she becomes one of their followers. Following this, she is often seen lurking in the shadows, acting as a guardian for Handa by preventing other girls from bothering him. Her key relationships are primarily with Handa, who remains mostly unaware of her feelings, the members of ERASER, to whom she becomes a devotee, and the other students.

Kasumi experiences a notable development in her perspective. After a minor misunderstanding leads her to believe that Handa has always been watching her work as a librarian and admiring her efforts, she re-evaluates her approach. She resolves to stop buying books specifically for him and instead focuses on attracting a wider range of students to the library by purchasing books for various tastes. This marks a shift from her obsessive focus on Handa to a more professional and community-oriented attitude toward her role. No notable special or physical abilities beyond her normal functions as a student and librarian are described.