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I Heard My Lovely Sister-In-Law's Engagement Was Broken So I'm Going to Show Them My 'Thanks!'

I Heard My Lovely Sister-In-Law's Engagement Was Broken So I'm Going to Show Them My 'Thanks!'

可愛い義妹が婚約破棄されたらしいので、今から「御礼」に参ります。

Roselia is the most talented girl in the kingdom: a brilliant scholar, a skilled fighter, and admired by everyone. She is about to marry her childhood friend and lover, Robert, the head of a ducal family. The wedding day is joyful until Robert's little sister, Margaret, is brought into the ceremony in tatters.

Margaret was attending the Royal Academy and engaged to the prince. He broke the engagement, accusing her of a crime she never committed, and ruthlessly beat her. Furious at the disgusting treatment of Margaret, who had done everything to clean up the prince's messes, Roselia decides to confront the corrupt royal court head-on.

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