Chapters 3 through 12 of the light novel introduce the protagonist, Shogo Hinata, and his childhood friend, Suzuno Tsukimiya. Suzuno is a highly popular student at Reirei Academy, known as the "Prince" of the school due to her striking appearance, athletic ability, and sense of justice. She possesses silver hair, blue eyes, and a perfect physique, being of mixed Japanese and Russian heritage. Despite her popularity, Shogo's own presence at school is unremarkable, marked by neutral gossip.
The narrative quickly establishes a stark contrast between Suzuno's public persona and her private life. At school, she is the epitome of cool and collected, even saving a junior student from falling with effortless grace and offering kind words. However, upon returning home, Suzuno transforms into her "Princess Mode." She is incredibly affectionate, childish, and dependent on Shogo, her childhood friend and neighbor. Shogo prepares elaborate snacks and tea for her, and she enjoys being carried in his arms, openly expressing her love for him. This dual personality is a secret known only to their families and themselves.
Shogo harbors deep romantic feelings for Suzuno, but he cannot confess because Suzuno herself has a crush on someone. This mystery person is described as cool, kind, and someone who listens to her whims, a "prince-like existence" to her. Intriguingly, this person is also Suzuno's "master" in her "Prince Mode," having influenced her public persona.
The chapters also introduce other significant characters. Yumeka Ringuji, a classmate and self-proclaimed "idol" of Reirei Academy, is a cheerful and energetic girl who is close to Shogo. She often wears his oversized cardigan, a habit that amuses and sometimes annoys him. Her initial impression on Shogo was that of a delicate, ethereal girl, a stark contrast to her current lively demeanor. Tomoe Kurose, another classmate, is a professional manga artist with a calm and reserved personality. She is working on a yuri manga that eerily mirrors Shogo and Suzuno's dynamic, causing Shogo some anxiety.
A recurring theme is the contrast between Shogo's interactions with Suzuno and his interactions with other girls. While he is gentle and complimentary towards Suzuno, his interactions with Yumeka and Tomoe are more teasing and friendly. He also has a brief, awkward encounter with Tomoe and a student named Chiyoko Saito, where Tomoe demonstrates a "yuri move" that leaves Shogo flustered.
The chapters highlight the complex relationships and hidden feelings within the school. Shogo's daily life is filled with caring for Suzuno, navigating her jealousy when he interacts with other girls, and dealing with the mystery of her crush. The narrative also touches upon the financial support Shogo receives from Suzuno's parents to look after her, which prevents him from taking on part-time jobs. The story arc for these chapters focuses on establishing the core characters, their relationships, and the central mystery surrounding Suzuno's "Prince Mode" and her secret crush, while also hinting at future romantic developments and comedic situations.