Keita, a relentlessly studious scholar, sacrificed social life for academic success. He achieved his goal of entering a prestigious university, but the reality fell short of his expectations, leaving him dissatisfied. In the spring of his senior year, a severe traffic accident landed him in a hospital, where he reconnected with Hibari Uekusa, a former classmate now working as a nurse. Keita had always quietly admired Hibari. Seeing her dedication to her career contrasted sharply with his own disillusionment. Their relationship grew quickly within the hospital setting. However, Keita's inexperience led him to misread Hibari's signals, and his impulsive attempt at intimacy shattered their budding connection. His efforts to apologize were interrupted by Kume, the rehabilitation doctor. With a chilling intensity, Kume warned Keita to stay away from Hibari, hinting at dire consequences if he disobeyed. Keita was alone with Hibari when he acted on his desires. The sudden appearance of Kume and his menacing words left Keita puzzled and forced him to confront an unsettling truth – a hidden, menacing presence surrounding the innocent Hibari.