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Daddy's Home : a Satoru Gojo Secret baby Romance

Summary:

Seven years ago, Erin Hayashi shared one perfect night with Satoru Gojo. When she discovered she was pregnant, the Gojo clan silenced her with threats and lies. Now she's spent years running with their daughter...a white-haired little girl with impossible power who's never known safety.

When curse users attack their motel, Gojo arrives to find a child who looks exactly like him protecting her scarred, exhausted mother.

"But I don't have a father," six-year-old Yuki tells him simply.

"You do now, princess," he replies, his world forever changed.

But Erin has learned that survival means trusting no one, not even the father of her child. As Gojo discovers the web of deception that kept his family from him, he must prove he's worth the risk of hope. Because Yuki deserves more than just surviving.

She deserves to come home.

Chapter 1: Before the Storm

Chapter Text

Chapter 1: Before the Storm

 

The abandoned department store loomed against the Tokyo skyline like a rotting tooth, its broken windows reflecting the late afternoon sun in jagged fragments. Erin Hayashi adjusted her equipment bag and checked her phone one more time—still no word from her assigned partner for this mission.

"Grade 2 cursed objects," she muttered, reading through the briefing again. "Possibly connected to recent disappearances in the area."

At twenty-four, Erin had been working as a Grade 3 sorcerer for three years through the Kyoto Prefectural Jujutsu Office, long enough to know that "possibly connected" usually meant "definitely connected" and that the higher-ups had a talent for understating danger. Her cursed technique—barrier weaving—made her valuable for evacuation and containment, but left her feeling perpetually assigned to the sidelines while others handled the real action.

A familiar surge of cursed energy made her look up just as a figure dropped from the roof of the building across the street, landing with impossible lightness on the pavement. Even from a distance, the shock of white hair was unmistakable.

Satoru Gojo. The strongest sorcerer alive, and apparently, her partner for this mission.

Erin's stomach did an unwelcome flip. She'd seen him around Jujutsu High, of course—impossible not to, given his reputation and his habit of making everything about himself. But she'd never worked directly with him, never been close enough to feel the weight of his presence pressing against her senses like a low-frequency hum.

"You must be Hayashi," he said as he approached, hands shoved casually in his pockets. His dark glasses reflected her own uncertain expression back at her. "Sorry I'm late. Had to finish up another job."

"It's fine," she managed, trying to project more confidence than she felt. "I was just reviewing the briefing. Shall we head in?"

"In a hurry?" His grin was sharp and amused. "The cursed objects aren't going anywhere. Besides, I like to get a read on my partners before we dive into potential death traps. Tell me about your technique."

Heat crept up Erin's neck. "Barrier weaving. I can create protective shields and small pocket dimensions. Nothing as flashy as yours, but useful for—"

"Evacuation and containment," he finished. "Practical. I like that." He tilted his head, studying her with an intensity that made her feel exposed despite the dark lenses hiding his eyes. "Most people try to oversell their abilities when they first meet me."

"Most people probably want to impress you," she said, then immediately regretted the words when his grin widened.

"And you don't?"

"I want to complete this mission safely and professionally," Erin replied, lifting her chin. "Your opinion of me is secondary to that goal."

Something shifted in his expression—surprise, maybe, or approval. "Interesting. Alright, Hayashi. Let's see what you've got."

The department store's interior was a maze of overturned fixtures and debris, thick with the cloying residue of cursed energy. Erin wove barriers around the entrances as they moved deeper inside, creating escape routes and containment fields with practiced efficiency. She was surprised to find Gojo watching her work with genuine attention rather than the bored tolerance she'd expected.

"Clean technique," he commented as she sealed off a stairwell where the cursed energy felt particularly dense. "No wasted movement. Who trained you?"

"Mostly self-taught," she admitted, following him toward the store's central atrium. "My family specialized in support techniques, but they..." She trailed off, not wanting to get into her tragic backstory with someone she barely knew.

"Dead?" he asked, matter-of-fact but not unkind.

"Curse attack when I was seventeen."

He nodded, understanding passing between them without need for further explanation. Loss was the common thread that bound all sorcerers together, the price of entry into their world.

They found the first cursed object in what had once been the jewelry department—a ornate music box that radiated malevolent energy like heat from a furnace. As Gojo approached it, Erin felt her barriers strain against the pressure.

"Can you contain the area if I break this thing?" he asked, already moving into position.

"How big an explosion are we talking?"

"Honestly? No idea. Could be a pop, could be a crater."

Erin stared at him. "That's your plan? 'Could be a crater'?"

"Hey, I asked if you could contain it. That's me being cautious."

Despite herself, Erin laughed. "You have a very unique definition of cautious."

"I prefer 'flexibly optimistic,'" he said, and she caught a glimpse of genuine humor beneath his cocky exterior.

She expanded her barriers, layering them in concentric circles around the music box. "Okay. I've got us covered. Try not to bring down the building."

"No promises."

The cursed object shattered under a focused burst of his energy, releasing a wave of force that would have leveled half the floor if not for Erin's barriers. The containment held, absorbing the impact and dissipating it harmlessly.

"Nice work," Gojo said, sounding genuinely impressed. "That was some serious output you just contained."

They found two more objects—a pocket watch and a ceramic doll—and fell into an easy rhythm. Gojo would locate and neutralize the threats while Erin handled containment and made sure no civilians wandered into danger. It was the most naturally she'd ever worked with another sorcerer, their techniques complementing each other in ways that felt almost effortless.

"That's the last of them," Gojo announced as they emerged into the evening air. "Efficient work. Most people I partner with spend half the mission trying to prove themselves and the other half getting in my way."

"Maybe you just intimidate them," Erin suggested, pulling off her gloves and stretching her tired hands.

"Do I intimidate you?"

She considered the question seriously. "A little. But not in a way that makes me want to show off. More in a way that makes me want to do my job well."

"Smart," he said, approval clear in his voice. "Intimidation is just another tool. The trick is knowing when to use it and when to set it aside."

They walked toward the street where their respective rides waited, the easy camaraderie of the mission lingering between them. Erin found herself reluctant to let it end, surprised by how much she'd enjoyed working with someone who took her abilities seriously.

"Hey," Gojo said suddenly, stopping beside a sleek black car. "Some of us are grabbing drinks to celebrate another successful mission. You interested?"

Erin hesitated. She had reports to file, laundry to do, a small apartment that felt increasingly lonely after evenings like this. But when had she last done something spontaneous? When had she last felt this comfortable around another sorcerer?

"Sure," she said. "I could use a drink."

---

The bar was dimly lit and crowded with off-duty sorcerers, the kind of place where curse users and supernatural incidents were discussed as casually as the weather. Erin found herself seated across from Gojo in a corner booth, several empty glasses between them and the noise of the crowd providing a comfortable backdrop to their conversation.

"So what made you want to be a sorcerer?" he asked, leaning back against the worn leather of the booth. He'd removed his sunglasses at some point, and she was struggling not to stare at his eyes—impossibly blue and bright, like looking into deep water lit from within.

"Didn't really have a choice," she said honestly. "My technique manifested when I was twelve, and after my parents died, it was either learn to control it or become a danger to everyone around me."

"That's not what I asked." His gaze was steady, patient. "Anyone can learn control. Not everyone chooses to fight curses professionally."

Erin turned her glass in her hands, considering. "I guess... I wanted to matter. My technique isn't flashy or powerful, but it keeps people safe. There's value in that."

"There is," he agreed quietly. "More than most people realize."

Something in his tone made her look up. "What about you? Why become a sorcerer when you could probably do anything you wanted?"

"Because I am stronger than everyone else," he said simply. "That comes with responsibilities whether I want them or not."

"Must be lonely," she said without thinking, then flushed. "Sorry, I didn't mean—"

"It is," he interrupted, surprising her with his honesty. "But not tonight."

The words hung between them, charged with possibility. Erin felt heat crawl up her neck as she met his gaze, seeing something raw and genuine there that made her chest tight.

"Gojo—"

"Satoru," he corrected. "And you're Erin, right? Not just Hayashi?"

"Yes," she breathed, hyperaware of how close they were sitting, how the noise of the bar seemed to fade around them.

"Good," he said, reaching across the table to brush a strand of honey-blonde hair from her face. "I wanted to be sure."

The walk to her apartment was a blur of charged silence and stolen glances. Erin's hands shook as she fumbled with her keys, acutely aware of Satoru's presence behind her, the weight of his attention like a physical touch.

"Are you sure about this?" she asked as the door swung open, giving him one last chance to change his mind.

 

He didn’t answer with words. instead, he stepped in close, pressing her against the doorframe, his tall frame looming with a quiet intensity. his hand cupped her face, thumb tracing her cheek with a tenderness that contradicted the raw hunger in his impossibly blue eyes.
“i’ve been sure since you laughed at my crater comment,” he murmured, voice low and rough, before crashing his lips into hers.

The kiss was a wildfire—desperate, consuming, laced with a primal need that buckled her knees. she clutched at his jacket, dragging him closer, tasting the faint bitterness of liquor on his tongue as their mouths devoured each other. he groaned softly, a deep, hungry sound vibrating against her lips, before lifting her effortlessly, her legs wrapping around his waist as he carried her inside, never breaking the kiss. the door slammed shut behind them with a thud that echoed their urgency.

They stumbled toward the bedroom, a chaotic trail of shed clothes marking their path—his jacket, her shirt, buttons popping in their haste.
Breathless whispers of “fuck, you’re gorgeous” from him and “hurry, satoru” from her filled the air as they tore at fabric. when he finally laid her on the bed, his gaze was molten, sweeping over her bare skin like she was a rare artifact, not just a fleeting moment.

“you’re fucking stunning,” he breathed against her throat, lips trailing fire down her neck, nipping at her collarbone as she arched into him with a soft, needy whimper. his hands explored her body with reverence and greed, fingers digging into her hips, mapping every curve as if committing her to memory. his mouth followed, sucking at the sensitive spot beneath her ear, drawing a sharp gasp—“oh god, there!”—that made him smirk against her skin.

“Like that, huh?” he teased, voice a dark purr, before moving lower, lips and tongue worshiping her breasts, teeth grazing a nipple just hard enough to make her cry out, a desperate “satoru!” escaping her. her hands tangled in his white hair, pulling him closer as he groaned, the sound vibrating through her chest. “fuck, erin, the way you sound…”

When she reached for him, tugging at his briefs, he shuddered, control fraying as she freed him. his cock was impressive—thick, hard as steel, veins prominent along its length, the tip flushed and leaking with want. she wrapped her fingers around him, stroking slowly, earning a hissed “shit, that’s good” as his hips jerked into her touch. his abs tensed, lean muscles flexing under pale skin, every line of his body taut with barely-restrained desire.

“i need you now,” she pleaded, voice breaking, spreading her thighs as she guided him closer. “please, don’t make me wait.”

“fuck, i won’t,” he growled, positioning himself between her legs, one hand bracing on the bed as the other teased her entrance, slick and ready. the first thrust was slow, deliberate, stretching her with a delicious burn as she gasped—a high, breathy “ahh!”—feeling every inch of him fill her, hot and pulsing. he groaned deeply, jaw clenched, eyes locked on hers.
“you’re so tight—feels like fucking heaven.”

“more,” she moaned, nails digging into his shoulders, urging him deeper. “harder, satoru, i need it.” her words unleashed something in him.
His hips snapped forward, powerful and unrelenting, each thrust rocking her body, the bed creaking under the force. the wet slap of skin on skin mingled with their ragged breaths, her soft cries—“yes, fuck, just like that!”—and his low grunts—“goddamn, erin, you take me so well.” his cock dragged against her walls with every stroke, hitting spots that made stars burst behind her eyes.

his body moved like a predator’s—shoulders rolling, thighs flexing with each punishing drive, sweat beading on his forehead as strands of white hair clung to his skin. he leaned down, capturing her lips in a messy, desperate kiss, tongues clashing as he swallowed her moans. one hand slid between them, thumb finding her clit and rubbing tight circles, drawing a shuddering “oh fuck, i’m close!” from her as her hips bucked wildly.

“me too,” he rasped against her ear, thrusts growing erratic, cock throbbing inside her. “erin, is it okay if i come inside you? i need to—fuck, i need to fill you.”

“yes, it’s fine,” she gasped, locking eyes with him, voice urgent. “i’m on the pill, just do it, please!”

“thank fuck,” he groaned, relief and lust mingling in his tone as he drove into her harder, chasing that edge. her climax hit first, a shattering wave that ripped a scream from her—“satoru, oh god!”—her walls clenching around him, milking him as she trembled beneath him. he followed seconds later, a guttural “fuck, erin!” tearing from his throat as he spilled inside her, hot and thick, each pulse of his cock branding her from within.

They collapsed together, a tangled mess of limbs and heaving breaths, sweat-slick skin pressed close as aftershocks rippled through them. the air was heavy with the musk of sex and the echo of their shared cries. satoru’s fingers traced lazy circles on her shoulder, lips brushing her temple with a tenderness that belied the ferocity of moments before. erin let herself linger in the illusion that this night—this searing, unforgettable connection—could be more than a fleeting blaze.

“we should probably—” he started, voice heavy with reluctance, cut off by the insistent buzz of his phone on the nightstand.

 

Erin's heart sank as she watched him reach for it, reality creeping back in around the edges of their bubble. She pulled the sheet up to cover herself, suddenly feeling exposed.

"Shit," he muttered, reading the message. "Emergency overseas mission. They need me on a plane in two hours."

He was already moving, gathering his scattered clothes with the efficient movements of someone accustomed to sudden departures. Erin watched from the bed, memorizing the lines of his body in the dim light from the window.

"I'm sorry," he said, pulling on his shirt. "The timing is—"

"It's fine," she interrupted, forcing a smile. "This is the job, right? We both know how it works."

He paused in the doorway, looking back at her with something that might have been regret. "Call me at the school when I get back. We should... I'd like to see you again."

"Sure," she said, though something cold was already settling in her stomach. "Be safe, Satoru."

And then he was gone, leaving only the lingering scent of his cologne and the echo of promises that felt too fragile to survive the harsh light of morning.