The story begins with an introduction to the janitor's room, a small, often overlooked space within the school. It's here that our protagonist, a diligent janitor, spends most of their workday, ensuring the facilities are clean and hygienic for students and staff. Life takes an interesting turn with the arrival of a JK, who, for reasons that might range from seeking solitude to escaping the pressures of daily school life, decides to make the janitor's room her temporary home.

The janitor, initially perplexed by this unexpected roommate, soon discovers that her presence brings about a series of unforeseen events and experiences. The JK, with her youthful vigor and fresh perspective, transforms the janitor's room into a vibrant space. She arranges the cleaning supplies in colorful patterns, uses her artistic skills to beautify the drab walls with graffiti, and even establishes a small library of manga and books, making the room a cozy retreat for both.

Their conversations are a blend of humor, wisdom, and sometimes, deep philosophical discussions about life, society, and personal aspirations. The janitor learns about the JK's love for fashion, her favorite manga, and her dreams, while the JK gets insights into the often-overlooked but essential work of a janitor.

The janitor and the JK share stories of their respective worlds. The janitor talks about the behind-the-scenes life of maintaining a school, from dealing with pranks to ensuring the facilities are always in top condition. The JK shares her experiences, from navigating the complexities of adolescence to her observations on school life, seen through the lens of someone who occasionally skips classes to find inspiration in the janitor's room.