Yarn arrives in the capital in search of his missing aunt, for the sake of his late mother. He finds a job at Grand Duke Ordin's mansion, but his job is to feed a mysterious monster imprisoned in the basement! And then, one day, Yarn stumbles upon the Grand Duke and has sex with him...! Between taming the monster, finding information about his aunt without the Grand Duke's knowledge, and discovering new pleasures as a virgin, Yarn has his hands full since arriving at the mansion. Little does he know what truths he's about to face...

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