TV-Series
Description
Chitose Kaginoji is a young teenager of fourteen years who serves as a supporting character within her narrative. She is introduced as a very wealthy girl with a taste for elegant clothing, often seen in outfits such as a red dress with a black skirt and a red ribbon in her hair. She has bright amber eyes and blonde hair, which she typically styles in a manner befitting her privileged upbringing.

Her background is deeply intertwined with the series' central mystery. Chitose is the granddaughter of Tokiko Tsukuyomi, a woman with a long and enigmatic connection to the main female protagonist, Tsukasa Yuzaki. Chitose does not share blood ties with Tsukasa, but she was taken into her family and has regarded Tsukasa as an older sister figure since childhood. This devotion was solidified by a pivotal event when Tsukasa saved a young Chitose from falling off a cliff. This act of heroism left such a profound mark on Chitose that she decided to dedicate her own life to repaying Tsukasa and ensuring her well-being.

Chitose possesses a personality that is both headstrong and prone to dramatic shifts, often bending from assertive confidence to whining frustration when things do not go her way. She is a classic example of a tsundere, frequently displaying a prickly exterior that masks a more caring and emotionally dependent interior. Her nature is also marked by a notable gullibility; she is known to take whatever Tsukasa says at face value, no matter how outlandish the statement might be. Despite her impulsive and sometimes spoiled demeanor, which is a product of her affluent upbringing, she is a talented student who remains popular at school, particularly among other girls.

Her primary motivation throughout the story is her fierce, overprotective love for Tsukasa. She is initially hostile and disapproving of Tsukasa's sudden marriage to Nasa Yuzaki, seeing him as an unworthy intruder who could never understand or care for her beloved Nee-sama properly. Chitose appoints herself as Tsukasa's guardian and the only suitable partner for her, and she goes to great lengths to sabotage the newlyweds' relationship. Her role in the story is often that of a comedic antagonist and a source of conflict, but her actions also serve a larger purpose. Her presence helps to deepen the mystery of Tsukasa's past, as her memories and her family's connection to Tsukasa provide important context and hints about the latter's true nature.

Chitose does not act alone. She is constantly accompanied by her two loyal and contrasting maids, Charlotte and Aurora, who assist her in executing various schemes. Her central relationship is, of course, with Tsukasa, whom she idolizes and calls "Nee-sama." She views Tsukasa as a precious and delicate being, a "glass butterfly" that is beautiful but easily hurt and prone to vanishing. Her relationship with Nasa evolves significantly. Initially, she treats him with contempt, resorting to tactics such as having him kidnapped to her villa and attempting to create a scandal to force a divorce. However, she is also observant. During a trip to Kyoto, she puts Nasa to the test by posing as his lover, intending to expose him as a fool. Instead, she finds herself impressed by his organization, his kind character, and his sincere dedication to Tsukasa. A major turning point occurs when Nasa tells her he married Tsukasa to prove his love, a declaration that finally convinces Chitose to accept their marriage, at least in part.

Throughout the narrative, Chitose undergoes notable development, gradually softening from a possessive and scheming rival into a more accepting, if still reluctantly so, family member. While she stops actively trying to break them up, she continues to visit the couple periodically to check on their well-being, still unable to completely suppress her overprotective instincts and her desire to be close to Tsukasa. Chitose also has a connection to her grandmother, Tokiko, whose wisdom and authority often serve to restrain Chitose's more impulsive actions. Her mother is a famous Japanese-style painter, which adds another layer to her family's artistic and prestigious background.

In terms of notable abilities, Chitose is not a fighter but relies on her family's immense wealth and resources. She commands a limousine and her maids to do her bidding, orchestrating elaborate comedic scenarios that inevitably go awry. Her true talent lies in her academic success and her charismatic, if unintentional, ability to draw people to her at school. Her most significant contribution is her deep-seated knowledge of Tsukasa's past, making her a key, if unwitting, narrator of the secrets that drive the underlying plot.