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One day, a girl who was raised as a boy has her entire life flipped upside down... A nameless boy who dreams of, becoming a knight works as a servant for the renowned Romagnolo Family. One day when he is seventeen years old, the boy faces his first monthly period and his mother tells him that actually, he is a girl. She is Count Romagnolo's Illegitimate child and her mother secretly raised her as a boy to protect her. When the count finds about his illegitimate child, be decides to use her as a pawn to protect his daughter, Maylene, from an unfavorable engagement. In that instant, the child who has lived for seventeen years without a name is given one, and her fife begins to change drastically. Her name is “Nullitas” which means nothing.
When a near-accident involving her father and a servant boy brings a new face into the Evegen jya home, the last thing Sioanna is expecting is for a new servant in her ranks, let alone a friend. Étienne has learned the hard way to be quiet and reserved, but as his relationship with Sioanna blooms, the two begin to form a bond of affection, care...and obsession. Despite the deep hurt in both their lives, their ability to treat one another with gentleness and kindness proves to be just the remedy they both needed. But will it be enough to conquer the countless obstacles that stand in their way?