What happens in private is supposed to stay private. Izuku thought he was being careful with the videos of him and his secret girlfriend. He was wrong. One accidental click from a friend, and the secret is officially out.
To the rest of the world, and especially to his friends from his U.A. days, Pro Hero Deku was an open book. Izuku Midoriya was the earnest, hardworking, painfully polite Number One Hero who still got flustered when people complimented him too much. His friends assumed he was entirely focused on his career, too busy saving the world to even think about dating.
They had absolutely no idea you existed.
For two years, you had been Izuku’s best-kept secret. It wasn't that he was ashamed of you—he was fiercely protective. With his status, any public relationship would put a massive target on your back. But keeping you hidden also gave him something else: a private world where he didn't have to be the world's savior. With you, he could just be a man. A very possessive, intensely passionate man that his friends wouldn't even recognize.
The secret finally unraveled on a lazy Friday evening.
A group of the old Class 1-A heroes had gathered in the agency lounge. Izuku had handed his unlocked phone to Denki to show him a video of a new support item he was testing, before stepping out of the room to grab a drink.
Denki watched the video, but when he went to close the app, his thumb slipped. He accidentally opened Izuku’s photo gallery, swiping right past the main camera roll and landing on a hidden, password-protected folder. Except, Izuku had forgotten to lock it before handing the phone over.
"Hey, what's this?" Denki muttered, leaning over next to Mina and Kirishima.
Mina’s eyes lit up with gossip. "Ooo, Midoriya's secret files? Open it!"
They expected boring hero analysis notes or blurry pictures of All Might. Instead, the screen populated with hundreds of photos of a girl they had never seen before. It was you.
The first few rows were devastatingly sweet. A selfie of you wearing Izuku’s oversized hero hoodie, completely swallowing your frame. A candid shot of Izuku kissing your cheek while you laughed, his freckled face glowing with absolute adoration. A picture of the two of you tangled up in blankets, fast asleep on his chest.
"Whoa... Midoriya has a girlfriend?!" Kirishima gasped, his jaw dropping.
"And she’s gorgeous! Why wouldn't he tell us?" Mina squealed, aggressively scrolling further down the folder to see more.
But as her thumb swiped down, the aesthetic of the album drastically shifted. The bright, sunny selfies disappeared, replaced by dark, heavy-lidded thumbnails taken late at night. The smiles were gone, replaced by flushed skin, messy hair, and dark bruises blooming along your collarbones.
Denki gulped. "Uh, Mina... maybe we should stop—"
It was too late. Mina’s finger accidentally (or not)tapped on a thumbnail with a play button, and the video immediately went full screen, the volume blaring into the quiet lounge.
It was a video Izuku had recorded himself. The camera angle was shaky, held in his massive, scarred right hand, pointing down at the bed. The friends froze in absolute, paralyzed shock. On the screen, Izuku’s broad, muscular chest was heaving with sweat, pinning you firmly to the mattress. His usually sweet, bright green eyes were dark, predatory, and burning with a heavy lust they had never seen.
But it was the audio that made them all instantly blush.
"Look at the camera, baby," Izuku’s voice purred from the speakers. It didn't sound like Deku. It was an octave deeper, rough and commanding, vibrating with raw dominance. "Let them see how perfectly you take me. Tell me who you belong to."
In the video, a soft, breathy moan escaped your lips as Izuku’s hips shifted heavily against you.
"What the fuck?!" Bakugo yelled from the couch, his red eyes wide.
The lounge door suddenly swung open.
Izuku stepped into the room, two sodas in his hands. He froze. The sound of his own ragged, dirty praise was echoing off the walls of the lounge. His eyes dropped to the phone in Denki’s shaking hand.
For a split second, the freckled hero looked like a deer in the headlights. His face flushed a deep, violent crimson. But as he looked at the shocked faces of his friends staring at the screen, the embarrassment vanished, immediately replaced by a dark, simmering possessiveness.
Izuku set the drinks down calmly. Green lightning sparked dangerously around his wrists as he walked over, snatched the phone out of Denki’s hand, and locked the screen with a sharp click.
"I think that's enough," Izuku said, his voice dropping into that exact same, terrifyingly low register they had just heard on the video. He looked around the room, his eyes hard and unyielding. "You didn't see anything. Understand?"
Nobody dared to say a word. Izuku turned on his heel and walked right out of the building.
Thirty minutes later, you were lounging on the couch in your shared apartment, wearing nothing but one of his t-shirts, completely oblivious to the chaos. You heard the front door unlock, but before you could even say hello, Izuku was crossing the living room in long, aggressive strides.
“Izuku? You're home ear—"
He didn't let you finish. He grabbed you by the waist, hauling you off the couch and pressing you firmly back against the wall. His lips crashed into yours, completely devouring your mouth. The kiss was desperate, bruising, and tasted like absolute possession. His large, heavily scarred hands slid under the hem of his t-shirt, gripping your bare hips so tightly it sent a jolt of heat straight to your core.
"Izuku... wait," you gasped against his lips, breathless. "What's wrong? What happened?"
He pulled back just an inch, his chest heaving against yours. His green eyes were completely dilated, burning with a frantic, heated energy.
"They saw," he breathed out, his voice thick and rough.
"My phone. Denki opened the locked folder. They saw the pictures of you. They saw... the videos."
Your heart stopped. Your entire face flooded with heat as the realization set in. "Oh my god... Izuku, they saw us doing—"
"I know," he growled, cutting you off, his grip on your hips tightening. "I hated it. I hated that they were looking at you. I wanted to break the phone in half." He leaned in, pressing open-mouthed kisses down the side of your neck, his teeth grazing your pulse point. "But god, baby... at the same time, it drove me completely crazy."
"Crazy?" you whimpered as his hands slid higher, brushing against your sides.
"Knowing they heard you begging for me," he confessed, a dark, heavy smirk playing on his lips as he ground his hips into yours, letting you feel exactly how fired up the whole ordeal had made him. "Knowing that they all realize exactly who you belong to now. They know the Number One Hero loses his fucking mind over you."
He didn't give you time to process the embarrassment. Izuku picked you up effortlessly, wrapping your legs around his waist as he carried you toward the bedroom.
"They only got a tiny glimpse," Izuku whispered darkly against your ear, tossing you onto the center of the bed and instantly crawling over you, trapping you beneath his heavy, solid frame. "Now I'm going to show you exactly what they couldn't see."