TV-Series
Description
Haruna Kasuga is a character from the multimedia franchise D4DJ and a member of the unit Lyrical Lily. She is a student at Yumeshima Gakuen, where she serves on the disciplinary committee, having volunteered for the position due to her serious and earnest personality. Despite her responsible nature, she often finds herself caught up in troublesome situations, frequently becoming the target of pranks and antics pulled by her fellow unit members, Kurumi and Miiko. Her height is 163 cm, her birthday is May 25th, and her blood type is O.

Haruna presents a strict and principled exterior, placing great importance on proper etiquette and the expected behavior of a young lady. She is known to chide Kurumi for calling her by nicknames like "Iincho" (Chairwoman) and frequently scolds both Kurumi and Miiko for their mischievous behavior. However, beneath this disciplined facade lies a genuinely kind and gentle-hearted person. Her softhearted nature is the very reason she so often gets dragged into adventures and odd jobs. A key contradiction in her character is her relationship with DJ culture. While she initially pretends to have no interest in it, she cannot hide her deep love for audio equipment, a passion inherited from her father. When the subject of sound systems arises, she becomes uncharacteristically excited and talkative, revealing a hidden enthusiasm that contrasts sharply with her strict image.

Driven by a sense of responsibility, Haruna sees herself as the guardian of Lyrical Lily, working to keep her energetic friends in line. Her core motivation is a desire to do what is right and maintain order, but this is constantly challenged by her own hidden passions and the chaotic but endearing influence of those around her. She is also a member of the tea ceremony club, where she enjoys inviting others to participate, showcasing a quieter side of her personality.

Her role in the story is primarily as the anchor of Lyrical Lily, providing a stabilizing presence against the group's more whimsical members. She serves as a straight man to the comedy of Kurumi and Miiko, often reacting with bewilderment or exasperation to their schemes. Her relationships are central to her character development. She feels a deep admiration for Aoi Miyake from the group RONDO, often addressing her with the honorific "sama" and becoming flustered in her presence, to the point of second-guessing simple text messages to her.

Her most significant relationship is with her bandmate Miyu Sakurada, whom she idolizes as an "angel" in both appearance and spirit. Haruna's feelings for Miyu are a major focus of her character, with many interactions hinting at a deep, romantic affection. She becomes visibly jealous when Miyu gives attention to others, blushes intensely when complimented by her, and once suffered a nosebleed when Miyu expressed love for the group. In the event "White Corsage of Dearest Love," Haruna plans to give Miyu a white corsage for White Day, a daydream that causes her to panic. After receiving a white marguerite flower from Miyu in return, she is later told that the flower's language includes "a secret love," leaving her to wonder if Miyu was aware of the meaning. On another occasion, Haruna declared Lyrical Lily to be "a unit for Miyu-san, by Miyu-san, and everything Miyu-san."

Haruna undergoes subtle but meaningful development, as her rigid exterior softens in response to these powerful emotions. Her character arc often involves reconciling her disciplined, rule-following nature with her involuntary and heartfelt reactions to those she cares for, particularly Miyu. Her notable abilities and interests include an encyclopedic knowledge of audio equipment, expertise in the card game Hyakunin Isshu, and a surprising familiarity with manga. She is a fan of The Quintessential Quintuplets, having become hooked on the series after reading a confiscated volume. She is also known to recognize shoujo manga tropes in her real-life interactions, such as receiving a headpat from Aoi. In the anime series Pucchimiku D4DJ Petit Mix, despite her own profound fear of ghosts, she bravely offers to protect Miyu in a haunted church, demonstrating that her desire to care for others can overpower her personal fears.