Princess Charlotte, the second princess of the kingdom and the youngest of five siblings, leads a sheltered life due to her unique ability to hear the thoughts of those around her. This telepathic trait, which she has possessed since childhood, makes social interaction difficult, leading her to avoid public appearances and social gatherings, earning her the moniker "Princess of the Deep Chamber Lily." Her family, aware of her condition, supports her reclusive lifestyle.
Chapters 3-12 detail Charlotte's daily life and the burgeoning relationship between her and her personal guard, Kain Zweis. Charlotte's days are filled with lessons, such as piano and dance, always under the watchful eyes of her guards. Kain, a dedicated guard assigned to her since she was ten, harbors an intense, almost obsessive affection for Charlotte, which he expresses through his constant, albeit unheard by her, internal monologues filled with adoration and declarations of her cuteness. He is the eldest son of a prominent noble family and a skilled knight.
A significant turning point occurs when Charlotte's second brother, Henry, suggests she practice dancing with other men in preparation for her upcoming 16th birthday debutante ball. This leads to Charlotte dancing with Kain. During this dance, Charlotte's telepathy allows her to hear Kain's increasingly flustered thoughts, revealing his deep feelings and jealousy towards any man who might interact with her. This experience sparks Charlotte's suspicion that Kain might have romantic feelings for her, though she struggles to discern the true nature of his affection, which seems to oscillate between adoration and something more profound.
Later, during a visit to her elder sister Sasha, Charlotte overhears a conversation that hints at a potential suitor, causing her distress and further fueling her uncertainty about her own romantic future. This conversation, coupled with her family's encouragement to consider Kain as a marriage prospect due to his unwavering affection and her own insecurities about her social skills, leads Charlotte to confide in Kain about her anxieties regarding marriage and her ability to be a suitable wife. Kain, in turn, offers her comforting advice, revealing his deep-seated desire to support her.
The narrative progresses to the official proposal of marriage. Charlotte's father, after some initial surprise and a touch of possessiveness, agrees to the King's proposal for Kain to escort Charlotte at her debutante ball, a gesture that signifies a de facto engagement. Kain is ecstatic, his internal thoughts a whirlwind of joy and disbelief at the prospect of marrying Charlotte. He is also privy to Charlotte's telepathic ability, which she reveals to him as a secret, fearing it might deter him. However, Kain reassures her of his unwavering love and acceptance, solidifying their bond.
The chapters conclude with Charlotte and Kain officially engaged, with their engagement to be publicly announced at Charlotte's debutante ball. Kain's internal monologues continue to be filled with adoration, now tinged with the excitement of their impending marriage. Charlotte, in turn, begins to reciprocate his feelings, finding comfort and happiness in his presence and his openly expressed affection. The story sets the stage for their marriage and the challenges and joys that lie ahead.
