Kazehara Tetsu

Biodata

Feature	Details
Name	Kazehara Tetsu (枫含原彻)
Alias(es)	Kyougoku Makoto (disguise); Kazuya; “Kagihara” (alternate rendering used in passages) 28 97 342 448
Gender	Male 377
Affiliation	Kōto Ikusei Kōtō Gakuin; Class A, later Second Year Class A; Kagihara Zaibatsu 2 342 377
Occupation/Role	Student; System user 1
Family	Kagihara Misaki (mother) 612 627
Status	Active 663 700
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Initial System loadout	1	Arrives at the academy with a system, 100 points, and the abilities Basic Combat Skills, Master Chef, and Polyglot. 1
Grandmaster of All Chess	11	Purchases and equips the skill for 250 points; gains comprehensive chess knowledge, including openings, tactics, endgames, and positional judgment. 11
Electronics Repair (Proficient Level)	62	Purchases the skill and uses it to restore Sakura Airi’s damaged camera. 62
Kyougoku Makoto’s Physical Condition	95	Purchases the 300-point physical-condition enhancement, which reshapes his musculature and bone density while greatly improving his stamina, strength, reactions, and dynamic vision. 95
Professional mixed-martial-arts mastery	358	Demonstrates command of comprehensive mixed-martial-arts techniques, including striking, kicking, grappling, defensive counters, and close-quarters combat. 358
Crushing Level combat strength	457	Demonstrates overwhelming power against Tsukishiro Takuya and Yagami Takuya, anticipating their coordinated attack and defeating both. 457
Record-breaking 100-meter sprint	547	Records 9.91 seconds in the 100-meter dash, surpassing his earlier 10.51-second performance. 154 547
Professional-squad dominance	624	Instantly incapacitates two trained adult operatives and subsequently defeats the remaining White Room-affiliated operatives with minimal effort. 624 625

Background / History

Kazehara is a reborn individual who enters Kōto Ikusei Kōtō Gakuin with a point-based system that can grant skills and items. He joins Class 1-A and immediately adopts a detached observer’s role, choosing a middle-back window seat from which to study his classmates. 1 2

During the entrance ceremony, he singles out the outwardly unremarkable Ayanokoji Kiyotaka as a “hidden protagonist,” drawing Sakayanagi Arisu’s interest. His early actions establish a pattern of gathering leverage: he records Kamuro Masumi shoplifting, preserves both original and edited footage through a Hidden Account, and plans to use the evidence to control her. 5 6 7

Although treated as a Class A figurehead by others, Kazehara does not define himself through class loyalty. Katsuragi Kouhei identifies him as an uncontrollable variable whose interests do not fit neatly into ally-or-enemy categories. 28

Kazehara is the young master of the Kagihara Zaibatsu. This background becomes known to Tsukishiro Tokinari during their confrontation over Ayanokoji and the White Room. Parts of Kazehara’s student file are encrypted, prompting Nagumo Miyabi to question his background. 263 342 343 377

During the Cultural Festival, Amasawa directs Kazehara to Mrs. Kagihara, later identified as his mother, Kagihara Misaki. Misaki is aware of his exceptional growth and his prominent relationships at school, and subsequently meets Sakayanagi and Kamuro. 612 627 629 630

Appearance

Kazehara has dark red hair, an athletic build with firm but not excessively bulky muscles, and an outwardly ordinary appearance that belies his physical power. 160 387 448

• His hands appear unremarkable despite being capable of crushing a blade through grip strength alone. 387
• He is described as notably handsome by Amasawa Ichika. 377
• During island exams, he commonly carries a backpack containing practical supplies and electronic devices. 405 429

Personality

Kazehara is calm, observant, and difficult to read. He habitually studies people’s motivations, weaknesses, and behavioral patterns before acting, whether he is identifying Ayanokoji’s concealed nature, exposing Kushida’s façade, or predicting Tsukishiro’s surveillance. 5 150 342

He is also manipulative and pragmatic, readily using blackmail, deception, and coercion to create useful arrangements. He considers strength and survival natural justifications for dominance, encapsulated by his response to Horikita Manabu’s concerns about the school’s purges. 6 7 177 223

Despite this detachment, Kazehara can be protective toward people he has accepted into his sphere. He checks on Karuizawa Kei’s safety, promises Kushida justice against Yagami, and tends Amasawa’s injured arm after defeating her. 179 377 447

His confidence occasionally becomes playful vanity. He enjoys Sakayanagi affirming that he is the school’s strongest student and gives deliberately cryptic advice when asked about his training. 160 343

Kazehara is direct about the people he values, even when his relationships are unconventional or non-exclusive. When required to rank students subjectively, he bases his choices solely on personal affection and acknowledgment rather than ability or usefulness. 212 644

Abilities & Skills

System

Kazehara’s private system displays abilities, quests, points, and a shop. It awards points for accomplishments and allows him to purchase skills or items that enhance his capabilities. 1 11 342

• Began his academy life with 100 system points. 1
• Earned 500 points by exploiting the rules of Sakayanagi’s warm-up logic game. 10
• Earned 500 points for completing the task to defeat Class C. 342
• Uses purchased skills for practical goals rather than relying solely on natural talent. 11 62
• Purchased Kyougoku Makoto’s Physical Condition for 300 points, substantially elevating his physical attributes. 95
• Examined an Omnipotent Body Repair Potion (Advanced) in the shop while considering treatment for Sakayanagi’s congenital condition; its listed price was 500 points. 210
• Conceals the system from others, once presenting it to Nagumo as an unbelievable joke when questioned about his speed. 267 627

Physical Combat

Kazehara possesses overwhelming strength, speed, reactions, and durability. He has repeatedly defeated opponents who expected a physical advantage, including Ryuen Kakeru, Hosen Kazuomi, Amasawa Ichika, Tsukishiro Takuya, and Yagami Takuya. 97 203 377 455 457

• Overpowered Ryuen in the forest and later threw him across the Sports Festival court. 97 158
• Blocked Hosen’s full-force flying kick without stepping back, then threw him into a tree. 454
• Dodged point-blank gunfire, disarmed Tsukishiro Takuya, and shot his own palm to test his bone hardness. 459
• Can subdue attackers with minimal movement, such as forcing Utsunomiya Riku into a half-kneel by controlling his wrist and arm. 442
• He admits that his advantage stems largely from system-granted attributes rather than formal martial-arts theory. 222
• Later demonstrates professional-level mixed-martial-arts knowledge, including striking, kicking, grappling, counters, and defensive technique. 358
• Anticipates and neutralizes Yagami’s blind-side attack while fighting Tsukishiro, then defeats both opponents in quick succession. 457
• Defeats a five-person professional squad affiliated with the White Room system, including disarming a stun-gun ambush and incapacitating several adults with minimal movement. 624 625

Athletic Performance

Kazehara’s speed, stamina, coordination, and explosive strength allow him to dominate competitive events and traverse difficult terrain rapidly. 154 161 405

• Won the 100-meter dash in 10.51 seconds while appearing to retain further capacity. 154
• Later recorded 9.91 seconds in the 100-meter dash, shocking students and teachers. 547
• Nagumo calculated his Sports Festival relay’s 200-meter split at approximately 19.50 seconds; Kazehara showed little fatigue during subsequent running training. 267
• Cleared hurdles while steadily widening his lead over Kanzaki Ryuji. 155
• Dominated the obstacle race through balance, crawling speed, and jumping power. 159 160
• Won the Two-Person Three-Legged Race with Hashimoto Masayoshi through synchronization and stamina. 161
• Crossed one kilometer of steep island terrain from D9 to B9 in three minutes to claim first arrival and 11 points. 405
• Ran two kilometers through the island forest in roughly five minutes, leaving Amasawa unable to keep pace. 408
• His sole-group status prevents a “bucket effect” during team-based island tasks. 409
• Outpaced Koenji Rokusuke in a later swimming duel by two to three seconds. 556
• Stabilized Onodera during their two-person three-legged race and helped secure first place in their group. 560
• Approaches an upcoming snowball fight by assessing its demands for reaction speed and accuracy; despite no specific training for the game, he considers himself unlikely to lose. 700

Academic Ability

Kazehara is credited with perfect Academic Ability and an A+ Physical Ability rating on the OAA, placing him among the strongest students in the second year. His first-year results list Academic Ability at A+ (100), Physical Ability at A+ (95), Flexible Thinking at A− (81), Social Contribution at B+ (80), and Comprehensive Ability at A (90). 359 368

• Finished a Mathematics Comprehensive Ability Test in 15 minutes for first place. 406
• Reads extensively in the library at a pace that impresses Katsuragi. 28
• Can recall OAA information on the top hundred first-year students. 362
• Lacks broad popular-culture knowledge and performs poorly in a music-recognition task. 419

Chess

After purchasing Grandmaster of All Chess, Kazehara becomes a formidable chess player capable of analyzing openings, tactical combinations, and positional exchanges instinctively. 11

• Regularly plays international chess with Sakayanagi Arisu. 24
• Wins more often than he loses, though he sometimes deliberately leaves openings for Sakayanagi to exploit. 24
• Coordinates with Sakayanagi in the Commander Tower match intervention against Ayanokoji. 339
• Can execute moves at super-rapid speed with virtually no visible hesitation during high-level play. 340

Technical Skills and Evidence Handling

Kazehara uses technology to collect leverage, evade surveillance, and erase evidence. 6 62 429 460

• Recorded Kamuro’s theft, edited the footage, and uploaded copies to a Hidden Account. 6
• Purchased a Formatting System to avoid academy monitoring of his files. 6
• Repaired Sakura Airi’s camera, deleted incriminating images, and overwrote the deleted data with meaningless shots. 62
• Damaged his electronic watch to create a believable loss of tracking signal during the island exam. 429
• Disposed of a gun, gloves, and other evidence in the sea after the confrontation with Tsukishiro Takuya and Yagami. 460

Equipment / Weapons / Items

• System interface — Displays abilities, quests, points, and the shop. 1
• Smartphone and Hidden Account — Used to preserve and distribute edited evidence of Kamuro’s theft. 6
• Formatting System — Purchased to conceal his activity from academy surveillance. 6
• Electronic watch and tablet terminal — Used for island maps, task registration, rankings, and radar tracking. 407 409 450
• Backpack and survival supplies — Prepared for the uninhabited-island exam. 405
• Walkie-talkie — Given by Sakayanagi and used to request intelligence on his pursuers. 429
• Finger wraps — Worn while confronting Hosen to avoid leaving fingerprints. 454
• Custom chess set — A black King and white Queen set given to him by Sakayanagi. 245

Relationships

• Sakayanagi Arisu — Chess rival, strategic partner, and close confidante; also described as his nominal girlfriend. She supports his plans, aids him during the island exam, and recognizes him as a serious opponent. Kagihara Misaki identifies Arisu as first in Kazehara’s personal ranking of the girls special to him. Their closeness is widely known at school. 5 24 278 339 429 497 629 630 659
• Ayanokoji Kiyotaka — A subject of Kazehara’s early interest and a rival whose “score” Kazehara insists on settling personally. They later agree to mutual assistance against external threats. 5 342 575
• Ryuen Kakeru — Repeated combat rival. Kazehara defeats him multiple times before offering him a deal to join his group and pursue his goals. 97 203 449
• Kamuro Masumi — Initially controlled through evidence of her shoplifting; their relationship later becomes private and intimate. Kagihara Misaki identifies Kamuro as second in Kazehara’s personal ranking. 6 24 629 630
• Horikita Suzune — An uneasy ally whom Kazehara assists and observes as she develops into a more independent strategist. She later offers to help with his class-merger plan and confesses her feelings for him; their deeper relationship remains private. 177 194 225 498 659
• Kushida Kikyo — Kazehara discovers her betrayal of Class D and uses knowledge of her secret to keep her under pressure and control. Their private dealings remain fraught with coercion, resentment, and mutual awareness. 149 150 177 484 659
• Karuizawa Kei — A dependent associate whom Kazehara protects from possible Class C interference. Their interactions include jealousy, gifts, and an implied romantic attachment. 179 245 298 299
• Amasawa Ichika — A curious junior and sparring opponent. Kazehara effortlessly subdues her White Room-trained attacks, though their interactions develop mutual interest and respect. She later assists in concealing evidence after the island confrontation. 376 377 459 460
• Onodera Kayano — A cordial rival and later Sports Festival partner; they agree to enter high-value doubles events together. Their training develops into a more trusting athletic partnership. 414 552 560
• Morishita Ai — A familiar and unconventional companion who regularly spends time with Kazehara. She has trained and competed alongside him, though she eventually realizes that he had been heavily restraining his actual strength during their sparring. 60 148 235 624
• Shiina Hiyori — A fellow mystery-novel enthusiast whose shared library discussions develop into a close connection. She addresses him as “Tetsu-kun” and is among the students he ranks highly by personal affection. 23 24 439 644 652
• Ichinose Honami — A capable cross-class associate who shares a comfortable rapport with Kazehara. Their continued cooperation and private interactions are widely recognized by Class D. 34 144 652 659
• Ibuki Mio — A combative associate whom Kazehara trains in mixed martial arts. She recognizes the extent to which he has restrained himself during training and later entrusts Yagami to his custody. 222 358 624 625
• Yagami Takuya — A White Room-trained adversary who repeatedly probes Kazehara and ultimately suffers decisive defeats at his hands. Kazehara later captures him after defeating the White Room-affiliated operatives. 407 457 458 625
• Horikita Manabu — A wary senior who recognizes Kazehara’s influence over Suzune and discusses Student Council threats with him. 223 225 280
• Kiriyama Ikuto — A Student Council vice president opposed to Nagumo who contacts Kazehara after Manabu identifies him as a potential variable. Kazehara is willing to exchange useful intelligence but refuses to concede an island-exam contest merely to advance Kiriyama’s standing. 246 248 409
• Nagumo Miyabi — A Student Council rival who probes Kazehara’s motives and background, investigates his exceptional speed, and later sends students to pursue him during the island exam. 262 263 267 427
• Kagihara Misaki — Kazehara’s mother. She is astonished by the pace of his growth and takes a strong interest in the girls important to him. 612 627 629 630

Story Role / Major Arcs

School Opening and Class A

Kazehara enters the academy, receives his system’s initial reward, and begins observing Class A from the back of the classroom. He rapidly identifies both Ayanokoji and Sakayanagi as people worth watching. 1 2 5

Kamuro Evidence Scheme

After witnessing Kamuro shoplifting, Kazehara creates protected video evidence and offers it to Yamauchi Haruki as bait. The scheme is designed to exploit Yamauchi’s vanity and create chaos through Kamuro’s compromised position. 6 7

First Uninhabited Island and Sports Festival

Kazehara helps shape Class A’s island strategy, including a plan for Tozuka Yahiko to withdraw on grounds of illness so the class can change its key-card holder after midnight. Operating under the Kyougoku Makoto disguise, Kazehara infiltrates the forest, observes Ayanokoji, and easily defeats Ryuen. He later dominates the Sports Festival through sprinting, hurdles, team events, and a decisive victory over Ryuen’s Class C blockade. 94 97 154 155 158 161

Kushida and Ryuen Conflicts

Kazehara uncovers Kushida’s dealings with Ryuen and her hostility toward Horikita. He subsequently defeats Ryuen and his allies in a one-sided restroom brawl after Ryuen threatens someone close to him. 149 150 203 204

Student Council and Mixed-Group Exam

Following Manabu’s warning about Nagumo, Kazehara speaks with Kiriyama about a conditional exchange of intelligence. In the mixed-group exam, he recruits students across classes and places strong competitors, including Manabu and Nagumo, together to pursue victory. Nagumo questions his motives and investigates his background and extraordinary running speed, but Kazehara refuses to explain the source of his abilities. 224 246 248 257 262 263 267

White Room and Student Council Affairs

Kazehara supports Sakayanagi’s match intervention against Ayanokoji, then exposes Tsukishiro Tokinari’s attempt to expel Ayanokoji. He makes clear that he will not permit anyone to remove Ayanokoji before their personal conflict is resolved. 339 342

Second Uninhabited Island Exam

Kazehara begins the second island exam as a solo group and rapidly builds a commanding point lead through speed, academic tasks, combat events, and efficient route selection. By the sixth day, his 436-point score makes him a target for Nagumo Miyabi’s pursuers. 405 406 409 425 427

He evades pursuit by faking a fall and damaged tracker, then confronts a series of challengers: Utsunomiya, Ryuen, Hosen, Tsukishiro Takuya, and Yagami. After overpowering Tsukishiro and Yagami, he removes the evidence and engineers circumstances that implicate Tsukishiro. 429 442 449 455 457 460

Later Plans

Kazehara continues pursuing Class A’s advancement while considering how Horikita’s Student Council position could be used to influence outcomes. He agrees to assist Ayanokoji against a looming threat despite the risks of working together. 575

Cultural Festival and Kagihara Family Visit

During the Cultural Festival, Kazehara makes a wager with Horikita over Class A’s kimono-café revenue. Amasawa later leads him to Mrs. Kagihara, who is revealed to be his mother, Kagihara Misaki. Misaki’s arrival brings Kazehara’s family awareness, personal growth, and relationships into focus. 612 627 629 630

White Room Operative Confrontation

Kazehara confronts a squad of professional operatives affiliated with the White Room system while attempting to reach Yagami. He instantly defeats multiple adults, counters a stun-gun ambush, incapacitates the remaining operatives, and captures Yagami for Ibuki. 623 624 625

Subjective Ranking and Class Coordination

When asked to produce a subjective school ranking, Kazehara ranks students according to personal affection rather than utility or ability. He remains highly regarded across the school, particularly alongside Ichinose, while continuing to coordinate with students from the different classes. 644 653 659 663

Winter Snowball Fight

Assigned to Team Three for a snowball fight, Kazehara studies the field’s snow-covered obstacles and considers reaction speed and accuracy the decisive factors. He has not trained specifically for snowball fights but judges his chances of losing to be slim. 700

Notable Quotes

“Might Makes Right.” 223

“Before that happens, no one is allowed to take him away from my sight, whether it’s you or that so-called father of his.” 342

Trivia

• Kazehara’s dialogue and narration occasionally use the surname Kagihara, including references to the Kagihara Family and Zaibatsu. 28 342
• He is pragmatic with personal points, favoring durable, functional goods over premium brands or luxury packaging. 301
• Despite his family’s wealth, his coffee collection includes ordinary beans rather than exclusively high-end brands. 633
• Horikita Suzune calls him a “Monster” because of his island-exam scoring pace. 425
• He can perform exceptionally in physical and academic tasks yet struggles with music-recognition questions due to limited popular-culture knowledge. 419
• Kagihara Misaki privately compiles a ranking of the four girls she considers most special to Kazehara, identifying Sakayanagi and Kamuro as the top two. 629 630
• Kazehara’s own subjective ranking of students is based on how much he personally likes and acknowledges them, rather than their strength, intelligence, or value to Class A. 644