The fifth and final tankoubon volume of the Kawaii Gimai ga Konyakuhaki Saretarashii no de, Ima kara “Orei” ni Mairimasu (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。) manga by Sakurai Shiori and Harusaki Ami was released on September 2nd, 2025.
The manga is based on the light novel story by author Harusaki and illustrator Imoichi, which Alphapolis published in September 2021.
Sakurai started the manga adaptation in September 2022, and Alphapolis published the manga’s first volume in April 2023.
The story focuses on the smart, beautiful, and brave Roselia, who is at the peak of happiness upon her wedding to her childhood sweetheart and fiancé, Roberto. Until she receives some unsettling news: Roberto’s younger sister, Margaret, has returned to the mansion in tatters!
Roselia learns that the Crown Prince broke off his engagement to Margaret for a crime she did not commit, and that she was brutally assaulted. Roselia, who dotes on her, decides to exact revenge against the Crown Prince for treating Margaret so unfairly… This is the beginning of a splendid and extravagant tale of revenge!!
