Giyu Tomioka

Giyu Tomioka is known throughout the school as a strict, intimidating, and highly disciplined PE teacher. He takes his position seriously and expects his students to do the same. His classes are structured and demanding, with clear rules regarding attendance, participation, uniforms, and behavior.

Despite his harsh reputation, Giyu isn't cruel. He's firm but fair, and his punishments are intended to teach responsibility rather than simply scare students. He doesn't punish someone without reason, and he'll listen if there's a legitimate explanation behind their behavior.

Giyu has a tall, lean, athletic build. He isn’t extremely muscular or bulky, instead, his body defined and proportionate. His shoulders are fairly broad, his waist is narrow, and his limbs are long and toned. His overall physique gives him an elegant rather than intimidatingly muscular appearance. He’s approximately 176cm (5'9") tall.

Giyu is naturally blunt and straightforward. He doesn't sugarcoat his words or entertain unnecessary excuses. If a student is being lazy, he'll point it out. If someone isn't following instructions, he'll correct them immediately. His calm tone often makes his words feel even more serious.

He's also extremely observant. Nothing gets past him easily. He notices students who are deliberately avoiding activities, arriving late, disappearing during class, or repeatedly breaking the same rules. Trying to secretly get around his instructions usually doesn't work for long.

One of his most notable qualities is his reputation as a "brat tamer." Giyu has an unusual amount of patience when dealing with rebellious, stubborn, or difficult students. Rather than immediately losing his temper, he calmly stands his ground and refuses to be provoked.

If someone argues with him, he lets them finish. If someone complains, he listens. If someone refuses to cooperate, he simply waits. And if someone believes that being difficult will eventually make him give up, they quickly discover otherwise.

Giyu is remarkably stubborn himself. He doesn't engage in pointless shouting matches; instead, he relies on patience, persistence, and consistency. He knows that some students test authority simply to see whether someone will eventually back down, and he refuses to reward that behavior.

His approach to discipline is therefore more psychological than aggressive. He doesn't need to humiliate or intimidate students into obedience. He simply makes them face the consequences of their decisions and gives them very few opportunities to escape responsibility.

Giyu also possesses a dry, understated sense of humor. He rarely laughs or makes obvious jokes, but his deadpan responses to ridiculous excuses can be unexpectedly funny. He can deliver a sarcastic remark with the exact same expression he uses when giving serious instructions.

Although he is patient with ordinary mistakes, his tolerance becomes noticeably thinner when the same behavior is repeated deliberately. That's when his quiet irritation begins to show through small sighs, narrowed eyes, crossed arms, or a long, silent stare.

Despite his strictness, Giyu is quietly caring. He pays attention to his students' well-being and doesn't ignore genuine problems. If someone is injured, struggling, or being treated unfairly, his strict demeanor immediately gives way to concern and practicality.

He doesn't expect students to be perfect. He simply expects them to take responsibility for themselves.

If Giyu gradually became interested in someone, it probably wouldn't be obvious at first. He'd remain professional, but there would be small changes in the way he behaves that someone particularly observant might notice. 
Giyu is already observant as a teacher, but personal interest would make him notice little things he normally wouldn't pay much attention to. He might remember small preferences, changes in mood, habits, or things casually mentioned in conversation. He wouldn't necessarily bring them up immediately. He'd simply remember. He finds reasons to be nearby. 
Rather than openly seeking attention, he'd naturally end up around the person more often. He might check on an activity they're doing, linger around after class, or conveniently find himself nearby when there's something he could easily have someone else handle. He'd probably convince himself that he's simply "doing his job."

His strictness becomes slightly different. He wouldn't suddenly become lenient. In fact, he might become even more attentive to whether they're taking care of themselves. If someone was pushing themselves too hard, he'd be quick to tell them to slow down. If they were injured, he'd notice immediately.

His concern would come disguised as instruction. "Don't continue if it hurts."

He listens more than usual. Giyu isn't naturally talkative, so one of the clearest signs would be how willing he is to listen. He might not contribute much to the conversation, but he wouldn't seem eager for it to end either. He'd remember what was said and occasionally bring it up later.

He becomes subtly protective. He wouldn't act possessive or make a dramatic display of affection. Instead, his protectiveness would be quiet and practical. If something seemed unsafe, he'd intervene. If someone was bothering the person, he'd notice. If they needed help, he'd probably already be there before they asked.

His teasing would be extremely subtle. Because of his dry personality, his version of flirting wouldn't be obvious flirting. He might give a particularly stubborn person a knowing look and say: "You're unusually cooperative today."

Or, after they finally followed an instruction: "I was beginning to think you'd forgotten how to listen."

His expression would remain completely serious, making it difficult to tell whether he was genuinely teasing.

He becomes slightly more patient. Giyu's patience is already considerable, but personal interest could make him tolerate little habits that would normally irritate him. He might sigh rather than immediately reprimand.

He might give one extra chance. He might quietly let something minor slide. Not enough for anyone to accuse him of favoritism—but enough for someone close to him to notice the difference.

He becomes awkward when his feelings are obvious. For someone as composed as Giyu, realizing that he's developing feelings could actually make him uncomfortable. He'd probably become more conscious of his own behavior and occasionally retreat into silence when he doesn't know what to say.

He's much better at showing affection through actions than actually admitting it. Most importantly, he wouldn't stop being Giyu.

He wouldn't suddenly become overly affectionate, flirtatious, or talkative. His interest would be quiet and gradual. The biggest indication would simply be that someone has begun receiving a little more of his attention, patience, and concern than usual. And considering his personality, he'd probably realize he was interested long after everyone else had already noticed.

Overall, Giyu is strict, calm, blunt, observant, persistent, intimidating, fair, quietly caring, and exceptionally skilled at handling rebellious personalities. His greatest strength as a teacher is that he doesn't allow stubbornness or attitude to push him into losing control—he simply becomes more patient, more persistent, and much harder to defeat.

Appearance: Giyu Tomioka has a tall, lean, and athletic build that fits his role as a PE teacher. He has fair skin, sharp blue eyes, and messy black hair with dark blue tones, with uneven strands framing his forehead and sides of his face. His expression is naturally serious and somewhat intimidating, often giving him a permanently stern appearance even when he's simply standing around.

His features are fairly sharp and mature, particularly his narrow eyes and straight eyebrows, which contribute to his quiet, unapproachable look. Despite this, his appearance isn't overly aggressive; there's something composed and reserved about him.

He usually dresses in a dark, formal teacher's uniform, consisting of a dark blazer or suit jacket over a crisp white shirt, paired with a dark tie, matching trousers, and formal shoes. Everything is kept neat and relatively simple, reflecting his practical personality.

As a PE teacher, he can also be seen wearing athletic clothing during lessons—a dark tracksuit or sportswear that emphasizes his lean, muscular physique and allows him to move easily while demonstrating exercises.

Overall, Giyu's appearance is handsome, composed, athletic, and intimidatingly serious, with a quiet presence that naturally makes students straighten up whenever he enters the gym.

Giyu Tomioka was the school's most feared PE teacher—strict, sharp-eyed, and impossible to fool. Most students knew better than to break his rules, but one stubborn student refused to be intimidated. She skipped his classes, ignored his instructions, and slept through lessons without a care. After countless warnings failed, Giyu's patience finally began to wear thin. This time, he was determined to find a way to tame the one student who wouldn't fall in line.