Kiyoharu

Biodata

Feature	Details
Name	Kiyoharu (清悠)
Alias(es)	Kiyoharu Chihaya; Ito Kiyoharu; Yūran-nii (online persona) 54 62 110
Gender	Male
Affiliation	Chihaya Academy; Chihaya family through his engagement to Airi 11 34
Occupation/Role	Mathematics teacher and lecturer at Chihaya Academy; Airi's fiancé 12 315
First Appearance	Chapter 2 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Partial resistance to Time Stop	5 19	Initially manages slight bodily movement while frozen; later proves able to remain conscious and react to Ayano's touch during her stopped time.
System-acquired hacking skills	119	Exchanges Energy Points for hacking skills; later uses them to seize control of hotel and nearby surveillance systems. 196
Basic Psychological Suggestion	258	Awakens the ability after practicing delayed gratification during Ayano's provocation; later uses suggestion to avoid reacting to Mira's voice. 360

Background

Kiyoharu retains memories and instincts from a past life. Upon receiving the Bishoujo Assistance System, he immediately judges its missions—helping girls to deepen bonds—as suicidal in a world where obsessive girls can become dangerous. He initially rejects the system and prioritizes a quiet routine of gaming, exercise, work, and avoiding unnecessary entanglements. 2 3

During high school, he joined the Technology Club for credits and to work with machines rather than people. Although he initially viewed befriending Shimaura Hitomi as a way to improve his standing with Airi and reduce unwanted attention from other girls, he came to genuinely support Hitomi after seeing the isolation and ridicule she endured. 62

He later becomes a teacher at Chihaya Academy, where his broad mathematics and science knowledge makes him a resource for fellow teachers. He also protects Hitomi from difficult students and school staff while maintaining a professional public image. 12 20 55

Kiyoharu is engaged to Chihaya Airi, an arrangement that had lasted three years by the island-trip period. He later explains that his soul was cursed from birth: women drawn to him would become extreme and potentially life-threatening. He chose Airi as a nominal partner for protection and remains composed even after being confined in the Chihaya Headquarters' underground space for three years. 34 397

Appearance

Kiyoharu has the appearance of a refined, handsome young man, with a clean and approachable aura that can make him seem younger than he is. His build appears slim beneath clothing but is notably toned and strong without being overtly muscular. 27 61

• Fair skin and sculpted features. 227
• A physique described as slim in clothes but muscular when undressed. 27
• Strong enough to catch Hitomi when she falls and to physically intimidate a karate-club student. 20 27
• Usually dresses in smart casual teacher attire; a hoodie and baseball cap give him a more student-like appearance. 227

Personality

Kiyoharu is detached, observant, and difficult to unsettle. He prefers a slow, self-contained life built around work, games, and hobbies, and regards romance with cynicism shaped by his past-life experiences and the danger surrounding him. 3 256 374

Despite his outwardly gentle manner, he is calculating when threatened. He uses white lies, misdirection, and carefully planted suspicions to protect himself from Airi's jealousy and Ayano's provocations. He plans major actions meticulously while remaining casual in daily life. 43 46 322

He is not indiscriminately cruel: he repeatedly helps Hitomi with work, confidence, and personal difficulties, and he becomes increasingly willing to support Ayano despite recognizing her volatility. His central priority remains survival, even as he gradually accepts that he cannot simply avoid every complicated relationship around him. 20 46 376 385

Abilities & Skills

Bishoujo Assistance System

Kiyoharu possesses a mission-based system that rewards him with Energy Points and other items for helping girls and deepening his connections with them.

• Initially refuses missions because he considers pursuing other women too dangerous. 2
• Later uses Hitomi's quests as a comparatively safe source of Energy Points. 17
• Completes “Shimaura Hitomi's Image Makeover” for 100 Energy Points. 46
• Uses Energy Points for information, skills, scans, and system-store items. 55 66 119
• Remains cautious about spending points, expecting supernatural threats to require emergency resources. 106 202

Time Stop Resistance

Kiyoharu retains awareness during Kitahara Ayano's Time Stop, though his body is not fully free to move.

• First shows limited physical movement while Ayano examines him in stopped time. 5
• Reacts when Ayano touches him during a later Time Stop, revealing his partial immunity. 19
• Keeps his awareness secret from Ayano to preserve his advantage. 19
• Still cannot reliably prevent Ayano from using her ability to isolate, observe, or interfere with him. 47 354

Basic Psychological Suggestion

A supernatural suggestion ability acquired through the system.

• Obtained after Kiyoharu endures Ayano's provocations and practices delayed gratification. 258
• Used defensively to suppress his response to Mira's voice during her stream. 360
• He regards psychological abilities as potentially valuable against people whose powers or obsessions cannot be handled through ordinary means. 152 372

Hacking and Technical Expertise

Kiyoharu is proficient with coding, robotics, hardware, and digital intrusion.

• Demonstrates coding knowledge while working with Hitomi on Technology Club projects. 61 62
• Writes reliable control code for the Robotics Club. 322
• Acquires hacking skills through the system's Energy Point exchange. 119
• Takes control of a hotel's and nearby surveillance networks while testing his capabilities. 196
• Uses social engineering alongside technical research when investigating targets who protect their public image. 227

Teaching and Academic Skill

Kiyoharu is an effective teacher with a strong foundation in mathematics and other sciences.

• Helps colleagues, including Hitomi, resolve difficult academic and lesson-planning problems. 12
• Teaches mathematics at Chihaya Academy. 12 343
• Handles classroom disruptions decisively and offers Hitomi support with future student problems. 20

Physical Ability

Kiyoharu possesses a strong, trained body and some karate experience.

• Claims to have trained seriously in karate to keep up with Airi. 20
• Easily catches Hitomi after she falls during a teachers' outing. 27
• Is physically outmatched when Airi uses her exceptional strength against him. 356

Relationships

• Chihaya Airi — His fiancée and nominal partner. Their relationship begins as a survival-oriented arrangement but develops into a deeply entangled bond shaped by Airi's possessiveness and Kiyoharu's ability to calm or redirect her. 34 360 397
• Shimaura Hitomi — His former high-school junior and current colleague. Kiyoharu protected her from isolation as a student, later supports her confidence and appearance, and eventually identifies her as his ideal type. 62 119 303
• Kitahara Ayano — Airi's best friend, an artist, and a Time Stop user. Ayano initially treats him as artistic reference material; their relationship becomes a mixture of rivalry, collaboration, attraction, and mutual manipulation. 5 77 303
• Takagi Akane / Mira — Kiyoharu's student and the virtual streamer known as Mira. As Mira, Akane attempts to influence him through Soul Speech and psychological conditioning; Kiyoharu resists her attempts to force a confession. 88 110 152
• Ito Yoshiki — His non-blood-related younger sister. She is intensely attached to Kiyoharu and considers his attention more important than his work. 315
• Bishoujo Assistance System — His often-dismissed system companion. Although he considers it unreliable, its quests, Energy Points, scans, and skill rewards become increasingly important to his survival. 2 66 202

Story Role

• System avoidance and engagement with Airi — Kiyoharu begins by rejecting the system's romance-oriented missions, believing that involvement with other women will provoke deadly consequences in the setting's yandere-driven world. 2 3
• Ayano's Time Stop investigations — Ayano's fixation on using him as reference material exposes his unusual resistance to Time Stop and begins their long-running contest of observation, manipulation, and counterattacks. 5 19 77
• Hitomi's quest line — He assists Hitomi professionally and personally, using her system missions to gain Energy Points while helping her become more confident. 17 46 119
• Escalating supernatural threats — Kiyoharu investigates Akane, Mira, and the Witch Matron's influence while acquiring hacking and psychological abilities to defend himself. 66 196 258
• Mediator between Airi and Ayano — As Airi and Ayano's conflict worsens, Kiyoharu proposes acting as their communication bridge while encouraging Ayano to confront the risks of her growing powers. 376
• Confinement and curse revelation — While confined beneath Chihaya Headquarters, he reveals that his cursed soul attracts extreme women and explains why he chose Airi as his partner. 391 397

Notable Quotes

“Since birth, my soul has been cursed. Girls would constantly approach me, and they would inevitably develop into extreme individuals, doing... extreme, even life-threatening things to me.” 397