Nanami Kento childhood headcanons .𖥔 ݁ ˖
This was really fun to write I hope you guys enjoy it! I tried to keep him in character and make everything as accurate as I could lmaoa
Request from: @markittykatt
Little!Kento whose parents were always just out of reach was born in a quiet, middle-class neighborhood in Setagaya, Tokyo. It was an area of neat houses, well-tended gardens, and an unspoken pressure to maintain appearances. His father was a mid-level executive at a trading company, often away on business trips, while his mother managed the household with an efficiency that bordered on coldness. Their love was expressed through expectations, not affection. They provided him with everything he needed: a clean room, nutritious meals, and enrollment in the best cram schools. What they didn't provide was their time.
Little!Kento who learned early on that his own company was his only guarantee. His favorite things as a kid were solitary pursuits. He spent hours meticulously building complex Lego architecture, following the instructions with a precision that pleased him more than any praise from his parents. He loved the smell of old books and would lose himself in encyclopedias, reading about anything from deep-sea creatures to the mechanics of a wristwatch. His favorite subject, however, was geography. He was utterly fascinated with a place called Kuantan, Malaysia. He'd stare at the vibrant photos in travel books—the turquoise water, the sprawling beaches, the lush greenery. It was a world so completely opposite of his structured, grey life in Tokyo. It became his secret dream to go there when he got older, a fantasy he'd nurse in the quiet of his room. Sometimes, in his most hopeful moments, he'd even imagine his parents coming with him, all of them walking on the warm sand, their schedules forgotten. His parents saw this not as childhood curiosity, but as a sign of his maturity. "Kento is so self-sufficient," they would tell their friends, a statement that felt less like a compliment and more like an excuse for their absence.
Little!Kento who matured so fast, learning to pack his own lunch, do his own laundry, and navigate the train system alone by age eight, that it became ingrained. The boy who once waited by the door for his father to come home stopped waiting. The nonchalant, almost detached persona he wears as an adult isn't a mask; it's the armor he forged in the silence of his childhood. There were rare, fleeting moments of silliness—a small, private smile when a pigeon did something particularly stupid, a quiet chuckle at a cartoon—but they were quickly suppressed, emotions he didn't know what to do with.
Teen!Kento who stepped through the gates of Jujutsu High was a paradox. The strict upbringing had created a young man who was fiercely independent and responsible, but the chaotic, vibrant energy of the school chipped away at his edges. He was still the calm, aloof one, the stark contrast to Haibara's relentless optimism and Gojo's boundless ego. He was the one who made sure everyone's homework was done and that they were on time for missions. But for the first time, he was part of a group, and that was a terrifying, thrilling thing.
Teen!Kento who experienced moments of genuine, unadulterated happiness that felt foreign to him. During a rare downtime weekend, Geto managed to drag them all to a small festival near the school. Nanami, who had planned to study, found himself watching Haibara try to win a cheap prize at a game stand, his face scrunched in concentration. When Haibara finally won and held up the ugly stuffed frog with a triumphant yell, Nanami felt a real laugh bubble up in his chest—a quiet, breathy sound that made Shoko glance at him in surprise. He had to turn away, the unfamiliar warmth of camaraderie overwhelming him. He'd step away to buy a drink, taking deep breaths to center himself, forcing the emotion back down before returning to the group, his expression carefully neutral.
Teen!Kento who developed a strange, grudging fondness for his friends. He would scold Gojo constantly. "Satoru, if you consume one more piece of mochi, you're going to be sick on the mission tomorrow," he'd say, his tone flat as he watched Gojo inhale his fifth snack. But Nanami had a secret sweet tooth, a holdover from a childhood where a single piece of candy was a rare, treasured treat. One evening, Gojo caught him meticulously breaking off a piece of a chocolate bar he'd bought, savoring it with his eyes closed.
Teen!Kento who froze when Gojo's signature smirk appeared. "Well, well, well. Nanamin has a sweet tooth." Nanami froze, the chocolate halfway to his mouth. A faint blush crept up his neck, the most flustered anyone had ever seen him. "Don't be ridiculous," he said, his voice a little too tight. "It's for energy." But Gojo just kept grinning, and from then on, a spare sweet would somehow always find its way onto Nanami's desk, left without a word. It was an annoying, unwanted gesture of friendship that he secretly appreciated, another crack in the armor he had spent a lifetime building.
Teen!Kento who, the first time he stepped onto the Tokyo Jujutsu High campus, felt the air was different. It wasn't the oppressive humidity of a Tokyo summer, but something heavier, charged with an energy he couldn't name. His parents had dropped him off at the gate, his father's hand on his shoulder a little too tight, his mother's smile a little too brittle. "Make us proud, Kento," his father had said, a command disguised as a plea. He had nodded, the perfect son. He didn't tell them he could feel the curses lurking in the shadows of the ancient trees, or that the very ground beneath his feet hummed with a power that both terrified and thrilled him. They wouldn't understand. They only understood report cards and prestigious career paths. Being a jujutsu sorcerer was neither, but it was the only path for someone like him. He was assigned a room and met his classmates. There was Shoko Ieiri, who regarded him with a lazy, analytical gaze, a cigarette already dangling from her fingers. There was Suguru Geto, whose polite smile didn't quite reach his eyes, a depth of sorrow already swirling in his aura. And then there was Satoru Gojo. Gojo was a supernova. Loud, brilliant, and utterly without a filter. He draped an arm over Nanami's shoulders within five minutes of meeting him, his grin blinding. "So, you're the new guy! Nanami, right? You look super serious. We're gonna have fun with you." Nanami stiffened, the unwanted physical contact setting his teeth on edge. "It's Nanami. And I'm here to work." He shrugged off the arm, his voice flat. Gojo just laughed, unfazed. "Work, work, work. That's Haibara's line, too!" And then there was Yu Haibara. Bubbly, earnest Haibara, whose sunny disposition seemed like a personal affront to the gloomy corners of Nanami's soul. "Don't mind Gojo, Nanami-senpai! He's just... like that. I'm Yu Haibara! Let's do our best together!" Nanami gave a curt nod. The group was a whirlwind of personalities he had no framework for. They were loud, expressive, and unapologetically themselves. It was overwhelming. He spent the first few weeks in a state of rigid professionalism, completing every assignment with precision, his 7:3 haircut a perfect line against his scalp. He was a machine, and that's how he survived.
Teen!Kento who felt the first crack in his carefully constructed facade come during a rare downtime afternoon. They were in the common room, a chaotic mess of scattered manga, snack wrappers, and the faint smell of Shoko's smoke. Gojo was attempting to balance a stack of sweet buns on his forehead, while Geto tried to read a book, periodically swatting at Gojo's hand as he tried to steal a page as a bookmark. "Gojo, if you eat one more of those, you're going to rot your teeth out," Nanami found himself saying, the words leaving his mouth before he could stop them. It was the kind of thing his parents would say, a judgment disguised as concern. Gojo's eyes, those impossible blue eyes, peeked over the stack of buns. "What's wrong, Nanami? Jealous? You want one?" He held one out, a taunting gesture. Nanami's stomach did a traitorous flip. He did. He had a secret, shameful sweet tooth, a relic of childhood afternoons spent stealing glances at pastry shop windows. "No," he said, his voice colder than he intended. "That's childish." But Gojo, the bastard, saw it. He saw the flicker of longing in Nanami's eyes. "Liar," he sang, popping the bun into his own mouth with a loud smack. "You totally want one. I saw it!" A hot flush crept up Nanami's neck. He felt exposed, raw. He stood up abruptly. "I have to study." He fled the room, his heart hammering against his ribs. It was just a sweet bun, but it felt like Gojo had reached into his chest and pulled out a vulnerability he hadn't even known was there. He stood in the hallway, leaning against the cool wall, taking deep, steadying breaths. He was overwhelmed. This camaraderie, this teasing, this warmth—it was an emotion he had no experience with. It was terrifying.
Teen!Kento who came back ten minutes later, his face a mask of neutrality, and sat down. He saw no one mention his abrupt departure, they just continued their chaotic afternoon. He slowly, painstakingly, began to loosen up. It wasn't a conscious decision; it was a slow erosion caused by the persistent, gentle tide of his friends' friendship. One evening after a grueling mission, Haibara suggested they go to a small ramen shop Geto knew. He was exhausted, every muscle screaming, but the thought of returning to his silent room was worse, so he agreed. The shop was warm and steamy, filled with the slurping sounds of other patrons. He squeezed into a booth, and for the first time, felt like he was part of something. He watched Haibara chattering animatedly about a girl in his class, and Shoko complaining about the quality of the cigarettes she had to buy. He saw Geto quietly listening, a small, genuine smile on his face. He saw Gojo was stealing pickles from everyone's bowls. He barked "Hey!" when Gojo's chopsticks darted towards his bowl. Gojo just grinned. "Sharing is caring, Nanami!" As he looked around the table—at Haibara's bright eyes, Shoko's smirk, Geto's calm presence, even Gojo's infuriatingly cheerful face—he felt a strange warmth bloom in his chest. It wasn't the heat from the ramen. It was something else. It was a feeling of belonging. For a moment, he let his guard down. He let a small, almost imperceptible smile touch his lips. It was genuine. He was happy. He saw Geto catch his eye and give him a subtle nod of understanding, as if to say, "It's okay to feel this way." He quickly looked down at his noodles, his face heating up again. He was still learning how to process these moments, these flashes of pure, uncomplicated joy. Later that night, walking back to the dorms, he felt Haibara fall into step beside him. He heard him say softly, "You smiled tonight, Nanami-senpai," his voice full of wonder. He didn't deny it. He just hummed in response, shoving his hands in his pockets. "It was good ramen," he offered, a flimsy excuse. Haibara agreed, his grin wide. "Yeah." He knew he wasn't talking about the ramen. For the first time, he thought that maybe, just maybe, he could get used to this overwhelming, terrifying, wonderful feeling of having friends. He was still Kento Nanami, serious and reserved, but his armor was no longer impenetrable. It now had cracks, small fissures through which a hesitant, unfamiliar light was beginning to shine.
Teen!Kento who found that the more time he spent with them, the more his rigid boundaries began to blur. He started finding himself in situations he would have once avoided at all costs. Like the time Gojo dragged them all to a karaoke bar, insisting it was "team building." He planned to sit in the corner and sip his soda, but an hour later, after Haibara's passionate but off-key rendition of a pop song, he found himself holding the microphone. He chose an old, melancholic enka ballad, something his father used to play. To his own shock, his voice was steady and clear, a deep baritone that silenced the room. When he finished, there was a beat of stunned silence before Shoko wolf-whistled and Haibara burst into applause. He felt a blush creep up his neck, but it wasn't entirely unpleasant. It was a different kind of exposure, not the raw vulnerability of the sweet bun incident, but a quiet revelation of a hidden part of himself.
Teen!Kento who, on a rare free day, was found in the library by Geto, not studying jujutsu theory, but poring over a large, glossy travel book. He was so engrossed he didn't notice Geto approach until he spoke. "Planning a trip, Nanami?" He jumped, snapping the book shut, but not before Geto saw the cover: "A Traveler's Guide to Malaysia." Geto didn't tease. He just pulled up a chair. "Kuantan?" he asked, his voice soft. Nanami just nodded, unable to meet his eyes. "It's a good dream to have," Geto said simply. "Don't let this life take it from you." The quiet understanding in Geto's words was a balm to a wound Nanami didn't know was so raw. It was the first time someone had acknowledged his dream without judgment or dismissal. It felt like a sacred pact, a secret shared between them.
Nanami Kento who loved his friends more than they knew..
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