Hitotsu no Shigusa mo

A young woman reflects on her feelings for Itou Hiroyuki, a math teacher and homeroom instructor for class 3-3 at Taihei Academy. Described as tall, cool, and youthful, Hiroyuki often appears so similar to his male students that they are hard to distinguish. The narrative follows the girl's emotions during the 15th winter of her relationship with her teacher, portraying a quiet and sorrowful account of her affection.