Wakana Kinme, whose full name is written 金目綿花奈 in Japanese, runs Kinme Cleaning, a specialty cleaning service in the coastal town of Atami, Shizuoka Prefecture. Operating her laundry business for two years, she offers wet cleaning, stain removal, leather polishing, and pickup or delivery services, the latter especially valued by elderly clients navigating Atami's hilly terrain. Her expertise in garment cleaning is notably detailed and professional.

She possesses complete amnesia regarding her life prior to these two years, retaining only her knowledge of cleaning methods. This memory loss forms a central aspect of her background, though its specific cause remains undisclosed initially. Despite this gap in her personal history, she has built a fulfilling daily routine centered on her work and the local community.

Her daily life involves managing her cleaning business, forming friendships with Atami residents, and regularly visiting hot springs or taking hot baths, aligning with the town's renowned onsen culture. These activities contribute to her sense of stability and belonging. Through her work, she engages with customers' stories and emotions, handling items imbued with their owners' memories. This allows her to indirectly safeguard those personal histories even as her own past remains inaccessible.

While her life appears tranquil and community-oriented, subtle hints about her forgotten past emerge, particularly toward the end of the first volume of her story, introducing elements suggesting a more complex or potentially darker history beneath her routine existence. The narrative gradually explores this unresolved mystery surrounding her origins and the events leading to her memory loss.