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The Hirose family lives in a certain prefecture. Due to the recent recession at his father's company, the family's life is in trouble, but their only daughter, Umi-chan, manages the household in place of her deceased mother. It's a pretty crazy family that teaches their daughter naughty things and makes it a daily routine for their daughter to volunteer for it and immerse themselves in pleasure. Here is the story of the prosperity of the Heisei era where a girl who was raised in such an environment takes off her skin for the sake of her beloved family.