TV-Series
Description
Hazuki Katou is a first-year student at Kitauji High School who enters the school seeking a fresh start, having spent her junior high years as a member of the tennis team at Higashi Middle School. She joins the concert band as a complete beginner with no prior musical experience, motivated purely by a newfound desire to try something fun and different. Although she initially admires the trumpet and intends to play it, a combination of fate and her own inexperience leads her to the tuba. In a moment of characteristic spontaneity, she accidentally buys a tuba mouthpiece by mistake, which she interprets as a sign, and she embraces her new role with enthusiasm, even affectionately naming her instrument with nicknames like Chupacabra or Tubacabra. Her personal history is marked by athletic pursuits, having also practiced karate when she was younger, which contributes to her physical resilience.
In terms of appearance, Hazuki has short, straight brown hair that curls slightly at the ends, which she often secures with a reddish-pink hair clip. She has gold-hazel eyes and, in her first year, a noticeable tan that reflects her outdoor sports background. Standing at 155 centimeters tall, she has an athletic and healthy build, even bearing some small scars on her knees from her tennis days. She prefers comfortable, sporty clothing like hoodies and feels self-conscious in more feminine outfits such as skirts, thinking they would not suit her. Her favorite colors are yellow and orange, which she often incorporates into her accessories and personal items.
Hazuki’s personality is defined by her radiant cheerfulness and boundless energy. She is a natural mood-maker who is almost always seen with a smile on her face, and her bright demeanor serves to uplift the spirits of everyone around her. She is exceptionally outgoing and friendly, showing no timidity or fear in new situations. Upon first meeting her classmate Kumiko Oumae, she immediately begins calling her by her first name and insists on the same informality in return, a gesture that initially surprises Kumiko but quickly forges a close bond. Hazuki is also notably spontaneous and a little clumsy, often acting before thinking things through, but she possesses a healthy sense of humor about her own mistakes and rarely dwells on regrets or worries. She prefers to face challenges head-on and move forward without looking back. However, beneath this tough exterior lies an endearingly human side; she has a known fear of ghosts and scary stories. Her hobbies include eating sweets, which she loves, and reading shonen manga for their exciting plots, as she finds shojo manga too embarrassing.
Hazuki’s primary motivation is simply to enjoy her high school experience and support her friends. As a novice musician, her main goal is to improve and contribute to the concert band, a journey driven by hard work and perseverance rather than innate talent. She develops a deep sense of responsibility and care for her instrument and her section, finding joy in the act of making music and in being part of a team. As her story progresses into her third year, her motivations evolve to include guiding younger students, as she takes on the role of a senior member and new student advisor, ultimately finding a career path in education inspired by her nurturing instincts.
Within the story, Hazuki serves as both a social catalyst and a pillar of emotional support. She is the one who helps draw the shy Sapphire Kawashima out of her shell and becomes a loyal, grounding presence for the often conflicted Kumiko. Her role is not typically that of a virtuoso soloist but rather the heart of the ensemble, demonstrating that dedication and a positive attitude are just as valuable as technical skill. She often finds herself in supporting roles, such as being part of the Team Monaka for those not selected for the main competition ensemble, where she learns the critical importance of behind-the-scenes work and cheering on one's teammates.
Her key relationships are central to her development. Her closest friendship is with Kumiko Oumae, her classmate and best friend, with whom she shares a deep, trusting bond built on sincerity and mutual support. She is also very close with Sapphire Kawashima, and together the three form an inseparable trio often referred to as the bass section friends. She has a complicated relationship with Shuuichi Tsukamoto, Kumiko’s childhood friend, for whom she develops romantic feelings. After he helps her with a task, she falls for him and eventually confesses her love at the Agata Festival, but is gently rejected because his heart belongs to someone else, implied to be Kumiko. Though initially hurt, Hazuki shows great maturity by accepting this and choosing to support her friends' happiness instead. Within the band, she looks up to the talented and ambitious Reina Kousaka, who initially intimidates her but later becomes a respected friend. She is guided and inspired by the eccentric bass section leader Asuka Tanaka, who chooses Hazuki for the tuba in the first place due to her ample lung capacity, a crucial asset for the large instrument. As an upperclassman, she develops a friendly but slightly rocky mentorship with younger students like Mirei Suzuki, whose serious attitude initially clashes with Hazuki’s lighthearted approach.
Hazuki undergoes significant development over her three years in high school. She begins as a complete beginner who cannot even distinguish between different brass mouthpieces, yet she grows into a competent and reliable musician who is respected by her peers. Her development is not merely technical but deeply personal. She experiences the pain of unrequited love and overcomes it without bitterness, strengthening her friendships in the process. She transforms from a carefree girl who avoids thinking about the future into a focused individual who makes a conscious decision to become an early childhood educator, a choice that brings her a sense of peace and direction.
Her notable abilities are primarily rooted in her physical strength and perseverance. Her experience in tennis and karate has given her strong lungs and athletic stamina, which are perfectly suited for playing the large tuba. While she is not a natural prodigy and often fails to make the main competition ensemble in her early years, her relentless practice and positive attitude allow her to improve steadily. By her third year, she is considered an experienced and skilled player, capable of instructing first-year students and serving as an example of dedication. She plays a Yamaha YBB-641 model tuba, a used school instrument with visible signs of wear that she cares for with great affection.
In terms of appearance, Hazuki has short, straight brown hair that curls slightly at the ends, which she often secures with a reddish-pink hair clip. She has gold-hazel eyes and, in her first year, a noticeable tan that reflects her outdoor sports background. Standing at 155 centimeters tall, she has an athletic and healthy build, even bearing some small scars on her knees from her tennis days. She prefers comfortable, sporty clothing like hoodies and feels self-conscious in more feminine outfits such as skirts, thinking they would not suit her. Her favorite colors are yellow and orange, which she often incorporates into her accessories and personal items.
Hazuki’s personality is defined by her radiant cheerfulness and boundless energy. She is a natural mood-maker who is almost always seen with a smile on her face, and her bright demeanor serves to uplift the spirits of everyone around her. She is exceptionally outgoing and friendly, showing no timidity or fear in new situations. Upon first meeting her classmate Kumiko Oumae, she immediately begins calling her by her first name and insists on the same informality in return, a gesture that initially surprises Kumiko but quickly forges a close bond. Hazuki is also notably spontaneous and a little clumsy, often acting before thinking things through, but she possesses a healthy sense of humor about her own mistakes and rarely dwells on regrets or worries. She prefers to face challenges head-on and move forward without looking back. However, beneath this tough exterior lies an endearingly human side; she has a known fear of ghosts and scary stories. Her hobbies include eating sweets, which she loves, and reading shonen manga for their exciting plots, as she finds shojo manga too embarrassing.
Hazuki’s primary motivation is simply to enjoy her high school experience and support her friends. As a novice musician, her main goal is to improve and contribute to the concert band, a journey driven by hard work and perseverance rather than innate talent. She develops a deep sense of responsibility and care for her instrument and her section, finding joy in the act of making music and in being part of a team. As her story progresses into her third year, her motivations evolve to include guiding younger students, as she takes on the role of a senior member and new student advisor, ultimately finding a career path in education inspired by her nurturing instincts.
Within the story, Hazuki serves as both a social catalyst and a pillar of emotional support. She is the one who helps draw the shy Sapphire Kawashima out of her shell and becomes a loyal, grounding presence for the often conflicted Kumiko. Her role is not typically that of a virtuoso soloist but rather the heart of the ensemble, demonstrating that dedication and a positive attitude are just as valuable as technical skill. She often finds herself in supporting roles, such as being part of the Team Monaka for those not selected for the main competition ensemble, where she learns the critical importance of behind-the-scenes work and cheering on one's teammates.
Her key relationships are central to her development. Her closest friendship is with Kumiko Oumae, her classmate and best friend, with whom she shares a deep, trusting bond built on sincerity and mutual support. She is also very close with Sapphire Kawashima, and together the three form an inseparable trio often referred to as the bass section friends. She has a complicated relationship with Shuuichi Tsukamoto, Kumiko’s childhood friend, for whom she develops romantic feelings. After he helps her with a task, she falls for him and eventually confesses her love at the Agata Festival, but is gently rejected because his heart belongs to someone else, implied to be Kumiko. Though initially hurt, Hazuki shows great maturity by accepting this and choosing to support her friends' happiness instead. Within the band, she looks up to the talented and ambitious Reina Kousaka, who initially intimidates her but later becomes a respected friend. She is guided and inspired by the eccentric bass section leader Asuka Tanaka, who chooses Hazuki for the tuba in the first place due to her ample lung capacity, a crucial asset for the large instrument. As an upperclassman, she develops a friendly but slightly rocky mentorship with younger students like Mirei Suzuki, whose serious attitude initially clashes with Hazuki’s lighthearted approach.
Hazuki undergoes significant development over her three years in high school. She begins as a complete beginner who cannot even distinguish between different brass mouthpieces, yet she grows into a competent and reliable musician who is respected by her peers. Her development is not merely technical but deeply personal. She experiences the pain of unrequited love and overcomes it without bitterness, strengthening her friendships in the process. She transforms from a carefree girl who avoids thinking about the future into a focused individual who makes a conscious decision to become an early childhood educator, a choice that brings her a sense of peace and direction.
Her notable abilities are primarily rooted in her physical strength and perseverance. Her experience in tennis and karate has given her strong lungs and athletic stamina, which are perfectly suited for playing the large tuba. While she is not a natural prodigy and often fails to make the main competition ensemble in her early years, her relentless practice and positive attitude allow her to improve steadily. By her third year, she is considered an experienced and skilled player, capable of instructing first-year students and serving as an example of dedication. She plays a Yamaha YBB-641 model tuba, a used school instrument with visible signs of wear that she cares for with great affection.