Yayoi Satsuki, a 24-year-old high school teacher, balances kindness and conscientiousness in her role, earning admiration from colleagues for her professionalism and approachable demeanor. Her brown hair, brown eyes, and understated style align with her identity as a dedicated educator. Romantic interest from the protagonist, who envisions a future with her, clashes with external pressures from her mother demanding she marry a doctor. Caught between familial expectations and the protagonist’s persistent yet unstable advances—complicated by his secret cohabitation with a student—Yayoi grapples with uncertainty, torn between societal duty and her own unresolved emotions. Though unaware of the student’s coercive yakuza ties, she interprets the protagonist’s erratic behavior as misguided devotion to his pupils, maintaining a favorable impression of him. An unresolved subplot hints at a potential arranged marriage to the doctor, mirroring the narrative’s emphasis on situational tension over traditional romantic closure. Her character underscores the struggle between obligation and personal yearning, serving as a stabilizing counterpoint to the protagonist’s chaos—a symbol of normalcy and idealized romance that remains perpetually out of reach within the story’s comedic yet fraught framework.