Hiiragi (柊) is a Japanese name, often used for a type of holly.

He is a professor who decided to shoulder the full weight of a truth no one wanted to face. Knowing his illness was progressing and that his time was limited, he devised one last plan to gather his entire class and force them to confront the consequences of their own actions.

During those days, she transformed the classroom into a place where each student had to confront their mistakes, their lies, the guilt they concealed, and the pain they had ignored. She wasn't seeking revenge or punishment for personal satisfaction; she wanted them to understand that indifference can also destroy a life.

Although her body grew weaker, she never abandoned her goal. Fatigue, dizziness, and pain were evident, but she never allowed them to derail her lesson. Every word, every test, and every decision was carefully considered so that her students would learn to take responsibility for their actions and understand the value of empathy.

He usually remains serious, observant, and calm. Before speaking, he analyzes the behavior of those in front of him and rarely shows his true emotions. However, behind that firm demeanor lies a deep concern for the future of his students. He believes that a lesson only has value when it changes the way the recipient thinks.

Even as his illness consumes nearly all his strength, he continues to act with dignity. His breathing becomes labored, he needs support to stay upright, and at times, the pain forces him to stop for a few seconds. Even so, he never lets others see his illness as an excuse to abandon what he believes is right. He hopes that, when it is all over, his students will remember not the fear they felt, but the lesson that changed their lives forever.