Chapters 3 through 12 of the light novel detail the dramatic public annulment of Princess Luise Recot's engagement to Prince Fred, the subsequent fallout, and the emergence of a mysterious connection to Prince Lucius Alvain.
The chapters open at a formal ball where Prince Fred, accompanied by Luise's twin sister, Lina, publicly declares the engagement broken. He accuses Luise of academic failure and unsuitability for royalty, contrasting her with Lina, whom he praises as a diligent and accomplished lady. Lina, feigning sympathy, further manipulates the situation by portraying Luise as pitiable. Fred then announces his engagement to Lina, to the applause of the assembled nobility, who openly mock Luise's perceived incompetence.
Luise, though outwardly composed, inwardly reflects on the truth: she has been the one excelling academically, acting as Lina's proxy in school. The narrative then delves into Luise and Lina's childhood, revealing Lina's manipulative and selfish nature, and Luise's long-standing habit of accommodating her sister. This pattern escalated when Lina began forcing Luise to impersonate her at the magic academy, leading to Luise's own academic decline and the loss of her dream to attend the magic university.
Following the annulment, Luise is confined to her room by her father, who is furious about the perceived disgrace to their family. Lina, meanwhile, revels in her newfound status and manipulates the situation further, ensuring Luise's room is repurposed for her. A significant turning point occurs when Luise receives a letter bearing the royal crest. To her surprise, it is not from Fred, but from Prince Lucius Alvain, the first prince and the brother of Fred.
The narrative then flashes back to Luise's childhood, detailing her first meeting with Lucius at a royal tea party when she was six. Feeling out of place and ostracized by Lina, Luise wandered off and encountered Lucius, who was reading a book on magical tools. Despite their age difference and Lucius's initial aloofness, they bonded over their shared interest in magic and magical tools, with Lucius revealing the existence of the Royal Library's hidden underground section containing forbidden magical texts. This encounter ignited Luise's passion for magic research.
Back in the present, Luise, now under house arrest, receives another visit from Lucius. He explains that Fred's annulment was unilateral and that the King is displeased. Lucius offers to accompany Luise to the palace to sign the annulment papers, having intervened with her father to lift her confinement. He then takes her to the Royal Library, revealing the secret underground chamber filled with forbidden magic books, which he calls his "little university." He declares Luise a student there, implying she has met the criteria for entry due to her strong desire for knowledge.
Lucius's actions reveal a deep concern for Luise, stemming from their childhood encounter. He expresses his disapproval of Lina and their father's treatment of Luise, stating that she deserves a wider world. He also admits to having been interested in Luise for a long time, even contemplating marriage, though he frames it as friendship.
Meanwhile, Lina, now engaged to Fred, is enjoying her privileged position in the palace. She reveals her manipulative strategy: she deliberately instigated Fred's actions, knowing he was driven by a complex inferiority complex towards Lucius and a desire to spite him. Lina believes her own talents and beauty guarantee her future as queen, dismissing Luise as insignificant.
The chapters conclude with Luise signing the annulment papers at the palace, accompanied by Lucius. Afterward, Lucius invites Luise to visit him again, suggesting they go to a magical tool shop. Luise's maid, Mia, interprets this as a date, much to Luise's confusion and slight discomfort, though she secretly cherishes the prospect of spending more time with Lucius. Luise also grapples with her self-image, feeling inadequate compared to her sister and fearing Lucius's potential disappointment. The narrative highlights Luise's deep admiration for Lucius, who represents hope and a path to fulfilling her academic dreams.
