The Fake Princess' OP BunnyThe Fake Lady and Her Rabbit Duke; 가짜 공녀님의 만렙 토끼; Gajja Gongnyeonimui Mallem Tokki; Gajja Gongnyeonimui ManLevel Tokki; My Badass Black Bunny; The Fake Princess' OP Bunny; The Fake Princess' Overpowered Bunny; The Fake Lady's Max Level Rabbit; Der mächtige Hase der falschen Adeligen; Le connil surpuissant de la dame contrefaite; El conejito dominado de la princesa falsa; El conejo de nivel máximo de la dama falsa; El conejo op de la princesa falsa; 偽公女様と秘密の黒ウサギ; 假千金的高级兔子

"The Duchess of Gernoa de Lantera," attracts attention from high society. But she's a fake! Her real name is Larissa. A girl who used to run street vendors in the market for families in poverty. She was sold to a duke by her family, to play the part of his dead daughter, and is living in danger. A rabbit with black fur in the arms of a fake duchess. That rabbit is fake too! The rabbit is Grand Duke Hadelund Strelitz, who is admired by everyone on the continent. He is the master and hero of the Grand Duchy, where the beasts from hell reside, but he is now a cute rabbit because of a spell. The Grand Duke, who happened to be saved by Larissa and received her care, naturally learns about Larissa's situation and secretly helps her. Larissa, who is being forced by the Duke to seduce the prince and marry him to become the future Queen of the country, and Hadelund, who increasingly came to know her worth, became interested in her. The encounter becomes fate and Larissa's life begins to change once again.