Knock knock.
Eren's heart slammed against his chest, a primal rhythm that echoed in his ears. She's back, he thought, his pulse spiking with a heady mix of anticipation and unease.
Mikasa had been out all evening, and though they'd agreed to this—to this reckless, intoxicating new chapter of their marriage—he hadn't expected it to hit him like a tidal wave.
He wiped his sweaty palms on his jeans, took a steadying breath, and crossed the room to open the door. The sight that greeted him sent a jolt of raw, conflicting energy through his body.
There stood Mikasa, his wife, her raven hair tumbling over her shoulders, her cheeks flushed a deep, betraying scarlet. Her lips were slightly parted, her breath uneven, and her eyes held a storm of emotions—shame, desire, and something unspoken that tethered her to him.
Beside her was Minato, his presence magnetic and commanding, his hand resting possessively on the curve of her waist. His fingers splayed over her hip, claiming her in a way that made Eren's blood boil and his body ignite.
"Well, well, Eren," Minato drawled, his voice a low, velvet caress that carried an edge of dominance. "Good to see you again. I hope you're ready for what's coming." He extended his free hand, but his other stayed firmly on Mikasa, his grip tightening as if to stake his claim right there in the doorway.
Eren forced a smile, shaking Minato's hand, though the contact felt like a spark igniting a powder keg of emotions. "Yeah, good to see you too," he said, his voice steadier than his racing heart. His eyes flicked to Mikasa, searching for her anchor in this storm.
Her gaze met his, fleeting but intense, and in that moment, he saw her vulnerability, her desire, and the unspoken promise that she was still his, no matter what.
Minato's lips curled into a smirk, his eyes glinting with unapologetic confidence. "I hope you don't mind me stealing your wife for the evening," he said, his tone dripping with provocation. As he spoke, his hand slid lower, tracing the curve of Mikasa's hip until it settled brazenly on her ass.
He gave it a slow, deliberate squeeze, his fingers sinking into the soft flesh through her tight jeans.
"She's been… eager for this."
"Mmmh," Mikasa let out a soft, involuntary moan, her body betraying her as her hips shifted slightly under Minato's touch.
Her face flushed deeper, her lips parting as she bit down on her lower lip, her eyes darting to Eren before dropping to the floor. The sound sent a shockwave through Eren, a searing mix of jealousy and arousal that made his throat tighten and his cock twitch.
Seeing another man touch his wife so intimately, so possessively, in their own home was like a blade twisting in his gut—and yet, it set his nerves alight with a dark, forbidden thrill.
"No problem at all," Eren said, his voice rough, betraying the storm raging inside him. He tried to focus on their agreement, the rules they'd set. "We're the ones who should be thanking you, Minato, for… joining us in this." The words felt foreign, heavy with the weight of what they implied. An open relationship—their open relationship—was supposed to be liberating, exhilarating.
He'd felt that high before, when he'd fucked Pieck, her body writhing beneath him while Mikasa watched, her eyes dark with lust and curiosity.
That night had been a revelation, a primal dance that had left him breathless. But this? This was a different beast entirely. This was Mikasa, his Mikasa, trembling under another man's touch.
Minato's chuckle was low, predatory, sending a shiver down Eren's spine.
"Thank me? Oh, Eren, you're too kind," he said, his voice laced with mockery. "Why would you thank me when I'm the one who gets to fuck your gorgeous wife? To feel her tight little body squirm under me, right here in your bed, while you watch?" His hand squeezed Mikasa's ass again, harder this time, pulling her flush against his side. She gasped, a soft, needy sound that made Eren's fists clench at his sides.
"Tell me, Eren," Minato continued, his eyes locked on Eren's, daring him to react. "Does it make you hard, knowing I'm going to make her scream tonight?"
"Ha ha," Eren laughed, the sound brittle, forced. Minato's laughter joined his, richer and more confident, as if he were savoring every second of this twisted game. Mikasa, though, stayed silent, her eyes fixed on the floor, her hands trembling slightly at her sides.
Eren could see the tension in her body, the way her chest heaved with shallow breaths, the way her thighs pressed together as if to quell the heat building inside her. She was caught in the same storm he was—torn between shame, desire, and the unbreakable bond that held them together.
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