Harumi Taniguchi is a bright, dependable, and charismatic classmate of Yuzu Aihara, known for her cheerful personality and hidden "stealth gal" spirit at a strict all-girls academy.
Harumi is an 18-year-old high school student, standing at 165 cm tall.
She is recognized by her straight, long hair with blunt bangs, usually styled in twin braids for school but left loose in private.
Her figure is notably voluptuous, and her physical presence often surprises others.
Harumi is honest, reliable, and has a big-sister vibe that makes her approachable and supportive to her peers.
Despite the academy’s harsh rules, she displays a playful side, especially through her love of flashy, revealing clothes outside school, describing herself as a “stealth gal.”
She is highly empathetic and attentive, noticing the needs and moods of those around her.
Harumi lives with her grandmother in a house close to her school, commuting daily by bicycle.
Her parents are not mentioned, highlighting her tight bond with her grandmother.
She initially struggled socially at the academy due to its strict culture, but quickly found a connection with Yuzu Aihara, who shared a similar outsider status.
Harumi has a unique special skill: she can hide almost anything in her ample chest—even, according to her, up to the size of a biwa fruit!
She skillfully sneaks a forbidden smartphone into school using this method, evading strict inspections that prohibit such devices.
She becomes Yuzu Aihara’s first friend after Yuzu transfers to the academy, offering much-needed warmth and guidance.
Although she was initially wary of Mei Aihara and her strict older sister, Mitsuko Taniguchi, her relationships with them have since improved and become amicable.
Harumi also grows close to Matsuri Mizusawa, whom she comes to understand deeply, often recognizing Matsuri's emotional state even better than Yuzu or Mei.
Her nickname among friends is “Harumin.”
Harumi is an excellent student, enjoying history as a favorite subject.
She refers to herself as a “stealth gal” because she carefully hides her flashy side during school hours.
She became a vital emotional support for Yuzu when Yuzu struggled to adjust to the academy's culture.
Her special technique for hiding objects has become something of a running gag.
“I can hide almost anything in here, from a smartphone to a biwa fruit!”
“I guess you could call me a stealth gal. School rules are one thing, but I’ve got my own style.”
Early School Life
When Harumi first entered the high school, she felt out of place due to strict, long-standing student rules and peers who had grown up under those rules (the “escalator group”).
Her outgoing, fashion-forward mindset initially clashed with the rigid culture.
Meeting Yuzu
Harumi approached Yuzu on Yuzu’s first day, sensing her discomfort as a transfer student, and the two quickly became friends.
She provided Yuzu with companionship and support, helping her cope with feeling alienated by her new surroundings.
Personal Growth and Relationships
Over time, Harumi’s empathy and open-mindedness allowed her to overcome her initial anxieties around Mei Aihara and Matsuri Mizusawa.
She learned to communicate more deeply with peers, becoming a trusted confidant within her group.
Inner Struggles
Although she rarely shows her vulnerabilities, Harumi’s personal challenges and internal realities are explored in depth in the original manga’s 39th chapter, offering rare insight into her inner world.
Voice Actress: Yukiyo Fujii
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