Tonko-chan is a certified care worker employed at a special nursing home for the elderly, referred to as a Tokuyō, a type of long-term care facility in Japan for seniors who require constant support. Rather than treat the job as a grim burden, she genuinely enjoys her work, finding pleasure in the small, everyday interactions with the residents. The narrative unfolds as a series of slice-of-life episodes from inside the facility, where Tonko-chan observes the elderly residents with a sharp, caring eye. She muses that learning about a person's past in sudden, unguarded moments is both fun and fascinating, a philosophy that shapes her patient, empathetic approach to caregiving. One notable chapter includes a side story in which she recounts the process of selecting a care facility for her own grandfather, told from the perspective of a fellow care worker. The manga presents a warm, human-centered view of elder care, focusing not on the hardships of the profession but on the small, meaningful connections between caregiver and resident, and the dignity and individuality of each elderly person.