TV-Series
Description
Nagahiro Sakiguchi is the vice president of Yubiwa Academy's Pretty Boy Detective Club. A third-year middle school student aged approximately 14, he also serves as student council president, a position he has held consecutively since his enrollment began, secured by a supremely eloquent new student representative speech that captivated the entire student body. His beautiful voice garners him numerous admirers, reportedly including professional voice actors.

Born into the wealthy Sakiguchi family, Nagahiro shoulders significant familial obligations. His parents arranged his engagement to Kodaki Kawaike, a first-grade elementary schooler and heiress of the financially struggling Kawaike family, as an act of assistance. This leads to frequent teasing from club members and others labeling him a "lolicon," accusations he consistently denies, attributing the arrangement solely to his parents.

He presents as soft-spoken, well-mannered, and consistently composed, projecting an aura of maturity as the club's oldest member. He often moderates the eccentric behaviors of fellow detectives while retaining a requisite childish spirit for club membership. A sense of obligation from his privileged upbringing drives him to help others, evident in his acceptance of the arranged marriage and efforts to befriend Mayumi Doujima. He demonstrates notable intellect and cunning, outsmarting professional criminals and rivaling shrewd individuals like Rai Fudatsuki. At the academy, he maintains a rivalry with Michiru Fukuroi due to contrasting social statuses, though they set aside their feud during club activities.

Physically, he is tall with gray eyes and very long, slightly wavy silver hair typically tied in a ponytail, his bangs covering his left eye. His standard attire is a modified Yubiwa Academy uniform: a lapel-less dark green blazer with three silver buttons, a white shirt featuring a black collar covering his entire neck, black-and-white striped pants, and white high-heeled shoes, accessorized with black gloves and a black ponytail bow. His manga redesign features straighter hair, a more conventional uniform with a purple tie and red-lined blazer, and knee-high silver heeled boots.

His primary ability is his "Beautiful Voice" (美声, Bisei), extending beyond natural eloquence to precise vocal manipulation, allowing him to mimic others' voices with high accuracy, proving instrumental in investigations.

His catchphrase is "Ladies and gentlemen, gather round!" reflecting his role as the club's communicator. Trivia includes the kanji meanings of his surname Sakiguchi (咲口), translating to "blossom mouth," and his given name Nagahiro (長広), meaning "leader broad." His formal club title is "Nagahiro the Orator" (美声のナガヒロ, Bisei no Nagahiro), incorporating the kanji for "beauty," and his appellation is "Councilman," ending with the kanji for "leader" or "chief."