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Katsuki spread his arms across the bed, basking in the afterglow of sex with his boyfriend on a Saturday afternoon. His legs felt tingly and his mind was more clear than it had felt all week. He took a few deep breaths, closed his eyes, and sunk deeper into his pillow.
“I feel so relaxed,” Izuku practically hummed as he made his way back from the bathroom. He flopped onto the bed next to Katsuki. “How are you so good at sex? It's not fair that you get to be good at everything, Kacchan,” he quipped, nuzzling into Katsuki’s neck.
“I didn't hear you complaining about it 10 minutes ago, Deku,” he replied, shoving his hand in Izuku’s face. His boyfriend laughed, a sound that Katsuki never grew tired of.
“You should change your hero name to Great Explosion Sex God Dynamite," he teased, looking up at Katsuki with bright eyes. Katsuki puffed out his chest at the compliment, but kept up his gruff demeanor.
"Only you get to call me that, nerd,” he growled. He tousled Izuku's curls roughly before wrapping an arm around his waist and gently rubbing circles into his back.
Izuku sighed contentedly, snuggling closer and resting his cheek against Katsuki's chest. He listened to Katsuki's heartbeat and felt the rise and fall of his breathing. He felt so safe in Kacchan’s arms, in their bed, in their little apartment. Their small sanctuary away from the stress of life. Here, they didn't have to worry about the hero billboard charts, or writing the UA hero course midterm exam, or dealing with pushy members of the press. They could just be two young heroes in love.
Katsuki tucked his nose into Izuku's soft green curls, breathing in the scent of his shampoo. The light filtering through the window cast warm sunbeams across Izuku's freckled skin. He looked beautiful. Katsuki wanted to capture this moment in his memory for eternity. He squeezed Izuku a little tighter. For a few minutes neither of them spoke, just soaking up the tender moment between them.
Izuku shifted beneath him, turning to meet Katsuki's gaze. He pursed his lips, a thoughtful expression on his face.
“Do you think Recovery Girl can kiss people without using her quirk?"
“What the fuck, Deku!? Why are you thinking about that wrinkly old lady while we're naked in bed?!"
“Think of the implications, Kacchan! What if she couldn't be in a relationship without constantly using her quirk?"
He scowled at his boyfriend, while privately feeling a rush of affection towards him. Their pillow talk often turned into hero analysis when Izuku felt relaxed and happy.
“I wonder if Best Jeanist uses his quirk to undress his partners," Izuku mused.
“Please don't talk about my mentor that way. I'll have that image burned into my mind forever."
He loved the banter they had as they lay in bed together. Some of his favorite inside jokes had been created from conversations just like this. Izuku was the only person he allowed to see this side of him, genuine, unguarded, and, dare he say, a little bit silly.
“Do you think Kamui Woods has to avoid dating anyone with a fire-type quirk?"
Katsuki sighed as Izuku mumbled on. He stretched his arms and legs, feeling the slight pull of his muscles. He fixed a stare at his distracted boyfriend before he interrupted, “You're still a damn nerd.”
Izuku blushed, but was quick to fire back, "Yeah, but you love me.”
He leaned in to press a kiss against Izuku's forehead, "I do love you, Izuku.” A smile spread across his boyfriend's face and a blush rose to his cheeks.
“I love you too, Kacchan," he murmured before pressing his lips against Katsuki's.
“Can we just stay in here forever?" Izuku asked. Katsuki's stomach chose that moment to let out a displeased rumble.
“Mmph. As much as I want to, I need lunch and I need it now." Izuku pouted.
“What if we order delivery?" he suggested before getting a mischievous glint in his eye. “Maybe we have time for round two before it gets here."
Katsuki licked his lips, watching as Izuku's eyes followed his tongue. He squeezed his boyfriend's arm before tracing a hand down his shoulder as he leaned towards his ear and murmured, “I like the way you think, nerd." He trailed hot kisses down Izuku's neck before he was pushed away.
“Kacchan, wait, we have to actually order something first!" he cried.
"Then you better hurry up,” Katsuki teased, stroking the sensitive spot on Izuku's lower back as he fumbled to open the app on his phone.
Once the order was placed, the phone was tossed to the side and they dove towards each other again. Katsuki reveled in the feeling of Izuku's lips against his, the taste of his mouth and soft glide of his tongue. No matter how many times they kissed, it was still extraordinary.
He let himself sink into the sweet refuge that was Izuku as he felt his rough hands stroking his back. He couldn't help the smile that spread across his face. His heart was home here, in Izuku's arms, in their bed, in their little apartment on a perfect Saturday afternoon.