The story follows Rea Emmanuel, a marchioness’s daughter and the only female knight at the academy. She suddenly realizes she has reincarnated as the villainess knight from an alternate world TL novel she was obsessed with in her past life. To avoid her destined death ending, she must accept advances from her fiancé. However, Rea has no experience or immunity with men, in both her past and present lives. In her moment of despair, her rival, the stoic knight Albert, appears. He is also her favorite character from her previous life. For some reason, he offers to become her practice partner for intimate activities. Rea is confused by Albert’s gentle kisses and caresses, but gradually begins to surrender her body to him. Their feelings drift apart because Rea believes Albert loves the story’s heroine, Marie. While on a joint mission with the knight order to investigate a certain matter, Albert confesses his true feelings to Rea.