A fourth grader named Kasumi arrives at her family's sprawling mansion in a quiet forest town, left behind while her parents pursue zoological research in Africa. The house seems ordinary at first, but she quickly discovers her living situation is anything but normal. The household staff aren't human: they're shape-shifting youkai called Henamon who take the form of everyday objects like pots, pans, and appliances. Rather than kick her out, these quirky creatures agree to let her stay in exchange for handling the cooking, cleaning, and laundry. What unfolds is a gentle comedy about adjusting to the unexpected. Kasumi learns to navigate life with her bizarre housemates, who range from helpful to mischievous. Each day brings new surprises as she bonds with her supernatural companions while managing domestic chores that would exhaust most kids. The series balances slice-of-life warmth with genuine fantasy wonder, creating a cozy yet mysterious atmosphere that keeps the premise fresh. Viewers drawn to character-driven stories with heart and offbeat humor will find plenty to enjoy here.