Chihiro Komiya is the protagonist of his story, an elementary school student who finds himself suddenly orphaned following the death of his mother, Chiyo Komiya. His father passed away when Chihiro was very young, leaving him with no immediate family. This leads to him being taken in by his previously unknown maternal uncle, Madoka Takatori, a wealthy but eccentric young man. Chihiro is approximately eleven to twelve years old and is a fifth-grade student at the start of the narrative. Physically, he has long, loose brown hair and olive eyes, and he is noted to bear a strong resemblance to his late mother. Due to his delicate features, he is sometimes mistaken for a girl, a perception that is only amplified by the frilly maid uniform his uncle provides for him.

At his core, Chihiro is defined by a powerful sense of self-reliance and a rigid personal discipline, values instilled in him by his mother who lived by the motto that those who do not work do not eat. He is a self-described neat freak with a passionate and near-obsessive love for cleaning. His idea of a good time is tidying up, and he possesses a high level of skill in both cleaning and cooking, taking it upon himself to manage all household chores. This disciplined nature puts him in constant, comedic conflict with his uncle Madoka, who is a slob and a packrat, forcing Chihiro into the unlikely role of scolding the adult of the house for his messy habits. Despite his young age, Chihiro is remarkably mature, intelligent, and practical, consistently earning top marks in school without needing to study outside of class. However, this maturity hides a more vulnerable side; having grown up poor, he tends to restrain his own desires and avoids asking for things he wants, a defense mechanism born from his difficult childhood.

Chihiro’s primary motivation throughout the story is rooted in his fear of being a burden and his need to earn his place in the world. He is fiercely independent and initially struggles to accept charity, which is why he insists on formally working as Madoka’s paid housekeeper rather than simply living as a dependent relative. His role in the narrative is as the domestic anchor of the Takatori household, tasked not only with cleaning the immense mansion but also with cooking meals and bringing a sense of order to his uncle’s chaotic life. As the story progresses, Chihiro undergoes significant development by learning to lower his emotional barriers. While he begins with a sense of apathy toward his new guardian, he slowly comes to genuinely care for and appreciate Madoka. Conversely, he learns to rely on his uncle for emotional support and to accept help, moving past his ingrained habit of doing everything entirely on his own.

His key relationships are central to his growth. The most important is with his uncle, Madoka Takatori, a role-reversal dynamic where the child acts as the responsible parent figure to the eccentric adult. Another significant relationship is with Yuji Hino, his best friend and loyal confidant who stood by him after his mother’s death and whose family has worked as Madoka’s gardeners for years. Chihiro’s abilities go beyond simple housework; he is a cleaning expert of the highest order, known to scrub sink traps with a toothbrush and meticulously clean ventilation fans. He is also a talented cook, skilled enough to teach others, and an excellent student with a clear ambition for the future: he aspires to become a hotel baron, a dream that reflects his desire for control, success, and perhaps a sense of security he lacked as a child.