Ibuki Mio

Biodata

Feature	Information
Name	Ibuki Mio (伊吹澪)
Gender	Female
Affiliation	Class C 55
Occupation/Role	Student; martial artist and participant in class-led special-exam operations
Status	Active 649
First Appearance	Chapter 55

Appearance

Ibuki is a short-haired girl whose guarded expression and combative posture make her difficult to approach. She is frequently depicted in athletic clothing or a sports uniform when training. 133 358

• Light-blue, short hair, often untidy, with bangs that can obscure part of her face. 133 216
• Usually wears a visibly irritated or wary expression. 133 201
• Wears black boots with her school uniform. 73
• Uses a disciplined martial-arts stance when preparing to fight. 74
• During the Cultural Festival, reluctantly wears a black-and-white maid outfit after losing a bet to Horikita. 597 600

Personality

Ibuki is blunt, proud, and highly competitive. She reacts aggressively to insults, humiliation, and perceived disrespect, especially when her physical ability is questioned. Her resentment toward Ryuen's authoritarian leadership is strong enough that she initially tries to avoid him outright. 55

Her pride also compels her to honor agreements she dislikes. Though deeply humiliated by the prospect of maid work, she ultimately enters Horikita's class café rather than be seen as someone who runs from a wager. 597 600 Horikita specifically identifies this sense of pride as the reason Ibuki would not sabotage the café despite their classes' rivalry. 598

Ibuki values direct, fair competition and dislikes Ryuen's underhanded methods. While ordered to monitor Kazehara Tetsu, she warns him about Ryuen's intentions rather than simply serving as an instrument of deception. 201 Her desire to surpass stronger opponents is persistent: repeated losses to Tetsu lead her to request formal instruction rather than abandon the challenge. 221 222

Abilities & Skills

Martial Arts

Ibuki has years of high-intensity martial-arts training and is capable of rapidly chaining kicks, knees, elbows, and punches into sustained attacks. 74 518

• Her signature opening attack is a low sweeping kick aimed at destabilizing an opponent. 55
• Demonstrates strong body control, explosive kicking power, and enough stamina to sustain repeated sprint drills. 74 518
• Begins Mixed Martial Arts instruction under Kazehara after their training agreement. 355 358
• Understands that physical conditioning and live-combat experience matter more than memorizing isolated moves. 358
• Remains decisively outmatched by Kazehara, who repeatedly blocks, evades, and counters her attacks with minimal effort. 55 74 221
• Her mental resolve can falter when she anticipates being struck; Kazehara identifies this lack of spirit as part of the gap between them. 221

Sprint Training

Ibuki develops her 100-meter sprint through intensive coaching, intending to defeat Horikita Suzune at the Sports Festival. 518 534

Recorded Time	Chapter	Notes
13.3 seconds	518	Initial recorded time; Kazehara judges her close to a higher competitive tier.
12.91 seconds	534	Personal best achieved after adopting basic running technique and eliminating inefficient movement.

• Her improvement is driven by exceptional physical fitness and the ability to adjust her movements precisely. 518
• She becomes overly fixated on the 100-meter event, risking weaker performances in her other Sports Festival events. 535
• She loses the long jump to Horikita by seven centimeters, intensifying her determination to win later events. 550

Covert Exam Operations

During the Uninhabited Island Special Exam, Ibuki carries out Ryuen's instructions with precision.

• Retrieves a hidden walkie-talkie and flashlight, then contacts Ryuen with a prearranged light signal. 96
• Helps implement the plan to frame Horikita Suzune for cheating by cleaning and returning Horikita's key card to her hand. 96
• Cooperates with Kazehara on an emergency key-card strategy after Class C's original plan is compromised. 98 99

Relationships

• Kazehara Tetsu — Initially hostile combat rival. After repeated defeats, Ibuki asks him to teach her how to close their strength gap, establishing a conditional teacher-student arrangement. Their rivalry later develops into regular MMA and sprint coaching, alongside mutual concern and unresolved romantic tension. 55 222 355 518 628
• Ryuen Kakeru — Classmate and operational leader whose dictatorial decisions and deceptive methods Ibuki resents. She nevertheless follows his orders during the Uninhabited Island Special Exam and later monitors Kazehara at Ryuen's request. 55 96 201
• Horikita Suzune — Physical rival. Ibuki repeatedly seeks direct athletic contests with Horikita, loses their Cultural Festival wager, and consequently works at Horikita's class café. 519 550 597
• Shiina Hiyori — Cooperates with her in Kazehara's proposed alliance involving Ryuen; later shares a casual lunch conversation with Hiyori and Kazehara about the Hokkaido trip. 465 649
• Karuizawa Kei — Meets during the maid-café event, where the two exchange a tense, suspicious standoff in the kitchen area. 601
• Kagihara Misaki — Kazehara's mother. Misaki openly teases Ibuki about her apparent feelings for Kazehara, leaving Ibuki flustered and unable to respond comfortably. 627 628

Story Role

Conflict with Kazehara

After arguing with Ryuen over Class C's development, Ibuki drags Kazehara into a secluded alley to avoid Ryuen and his companions. Her retaliatory attack is stopped when Kazehara points out a surveillance camera, leaving her unable to fight without risking punishment. 55 The incident becomes the source of her determination to defeat him. 56

A month later, Ibuki challenges Kazehara again. Her attacks in a nighttime park duel are evaded and countered, reinforcing the difference in their combat ability. 73 74 Despite further defeat on Christmas Eve, she openly asks him to teach her rather than continuing to pursue revenge alone. 221 222

Uninhabited Island Special Exam

Ibuki acts as Ryuen's operative against Horikita, securing Horikita's key card and helping stage evidence of cheating. 96 When the plan fails, she is forced to acknowledge both Kazehara's superior awareness and the precariousness of Class C's position. 98

Later, she accepts Kazehara's proposal to take a more active role in a replacement key-card strategy, showing greater willingness to make practical decisions for her class. 99

Training and Sports Festival Rivalry

Ibuki confronts Kazehara for neglecting his promise to teach her hand-to-hand combat; he agrees to begin MMA training during spring break. 355 Their sessions establish a more formal coach-student dynamic, though Ibuki remains frustrated by his casual approach and refusal to reveal his full routine. 358

She subsequently demands sprint coaching so she can challenge Horikita at the Sports Festival. Her training improves her 100-meter time, but her obsessive focus on beating Horikita contributes to pressure and self-doubt. 518 534 535

Cultural Festival Bet

After losing her wager with Horikita, Ibuki is required to assist at Horikita's class maid café. 597 She initially hides from the assignment and struggles to admit why she is there, but ultimately accepts the maid uniform and serves customers despite her discomfort. 584 598 600

Her abrasive, unpolished customer-service style unexpectedly appeals to one customer, who views her as an authentic “tsundere” maid. 601

Yagami Incident

Ibuki is struck hard enough by Yagami Takuya to collapse during an escalating confrontation. 619 After Kazehara subdues Yagami, she realistically admits that the gap in strength prevents her from handling him herself. 625 She is later deeply concerned about the potential consequences for Kazehara and herself, but trusts his composure enough to gradually calm down. 626

Notable Quotes

“I, Ibuki Mio, would never do such despicable things!” 93

“Fine... Make way. I'll fulfill it right now!” 597

“I have no intention of losing to Horikita Suzune again at that so-called Sports Festival.” 534