"Ahhhh!"
Yumiko's nails dug into his shoulders as her body stretched to accommodate him. The burn was sharper than she'd expected, a white-hot ache that made her toes curl. Tatsuki stilled when fully sheathed, his forehead dropping to hers as they both panted.
"Okay?" he murmured, his voice rough with restraint.
Yumiko nodded, focusing on the way her body adjusted to his—the strange fullness, the heat of him pressed so intimately close. Tatsuki's fingers intertwined with hers, their palms pressed together as he began to move.
His first experimental thrust drew a gasp—not from pain, but from the unexpected friction sparking along her nerves.
"Oh—"
The sound spurred Tatsuki on. He set a slow, deep rhythm, each movement calculated to draw pleasure rather than pain. His lips found hers again, swallowing her soft whimpers as his hips rolled against hers with increasing confidence.
"Feel good?" he breathed against her mouth.
Yumiko could only nod, her body arching into his as pleasure coiled tight in her belly. Tatsuki's hands roamed her body with reverent curiosity—cupping her breasts, tracing the curve of her waist, mapping every inch of her as if committing her to memory.
The intimacy of it stole Yumiko's breath more than the physical joining. Tatsuki wasn't just taking—he was giving, his entire focus attuned to her responses, her pleasure.
"Right there—nnngh—yes!"
Her moans grew louder as he found a particularly sensitive spot, her thighs clamping around his hips to pull him deeper. Tatsuki groaned her name, his pace quickening in response to her enthusiasm.
THRUST! THRUST! THRUST! THRUST!
The coil in Yumiko's abdomen tightened unbearably—then snapped without warning.
"T-Tatsuki—I'm—!"
Her back arched violently as her climax crashed over her, her walls fluttering around him in rhythmic pulses. Tatsuki followed moments later, his hips stuttering as he spilled inside her with a guttural cry.
SPURTTT! SPURTTT! SPURRRTTT! SPURRRTTT!
They collapsed in a tangle of limbs, both struggling to catch their breath. Tatsuki's fingers traced idle patterns down Yumiko's spine as he nuzzled into the crook of her neck, his lips brushing her damp skin.
Yumiko's breath caught as Tatsuki's hands slid up her trembling thighs, his fingertips brushing the still-sensitive skin where her stockings ended. The air between them smelled of sex and sweat, their first coupling barely minutes past, yet his erection already pressed insistently against her hip.
"T-Tatsuki," she whispered, her voice cracking as his palm cupped her damp heat from behind. "We shouldn't—"
His answering chuckle vibrated against her shoulder blade. "Your body disagrees." His fingers slid through her slickness, gathering evidence of her arousal before painting it across her inner thighs. "You want this too~."
The crude observation made Yumiko's cheeks burn. She turned her face into the pillow, trying to muffle her whimper as he positioned himself behind her. The head of his cock nudged her swollen entrance, still stretched from their first joining.
Tatsuki is Yui's boyfriend. Yui's boyfriend. Yui's—
Her mantra shattered when Tatsuki pushed in with one smooth thrust, seating himself deeper than before in this new position. Yumiko's fingers twisted in the sheets as she fought to stay quiet, the bedsprings creaking dangerously beneath them.
"Relax," Tatsuki murmured, his hands smoothing up her arched back. "Just feel."
His thrusts started slow—almost tender—but each movement hit places inside her that made stars burst behind her eyelids. Yumiko bit her lip raw trying to contain her sounds, but when Tatsuki's fingers found her clit, her control shattered.
"Ah! Nnngh—!"
The broken sounds escaped despite her efforts. Tatsuki groaned in response, his pace quickening. "Fuck, I love those noises," he breathed against her shoulder. "Love how you try to stay quiet for her."
"Mngg… Nnngg… Mngh…"
The mention of Yui sent conflicting tremors through Yumiko's body—guilt tightening her chest even as arousal pooled hotter between her thighs. Her inner walls fluttered around Tatsuki's length, betraying her despite her best efforts.
"She won't hear," Tatsuki soothed, though his thrusts grew more insistent. "Just let go."
Yumiko shook her head, tears pricking at her eyes as pleasure coiled tighter in her belly. The bedframe protested louder with their movements, each creak a potential death knell for her friendship.
We should stop. We have to stop. But—
Her thoughts scattered when Tatsuki's hand suddenly left her hip. The sharp crack of his palm connecting with her ass cheek echoed through the room.
"MMMNNGHG~"
The stinging impact reverberated through Yumiko's body, her shocked gasp muffled against the pillow. Before she could process the pain, pleasure crashed through her in its wake—her inner muscles clamping down on Tatsuki's cock in instinctive response.
"Fuck—" Tatsuki's rhythm faltered, his grip tightening on her hips. "That's it, just like that."
His praise burned hotter than the handprint blooming on her flesh. Yumiko trembled beneath him, torn between pushing back into his thrusts and pulling away from the shame. Another sharp smack landed—this time on the opposite cheek—drawing a broken cry from her lips.
"Ngh! Tatsuki—!"
"Shh," he murmured, though his hips continued their relentless pace. "Don't want to wake her, do you?"
The reminder of Yui sleeping just downstairs sent fresh guilt coursing through Yumiko's veins. Yet her body arched instinctively into the next thrust, the pain mixing strangely with the pleasure until she couldn't separate them.
Tatsuki's fingers traced the heated skin of her backside, his touch unexpectedly gentle compared to his punishing rhythm. "Beautiful," he breathed, kneading the stinging flesh. "Your pussy is so delicious."
Yumiko shook her head violently, her nails scoring the sheets. She couldn't speak—couldn't admit how the shame only heightened her arousal, how each sharp slap sent fresh waves of pleasure crashing through her.
"Tell me," Tatsuki urged, his voice rough with exertion. "Tell me how it feels."
"I—I can't—"
Another sharp smack landed, harder this time. The pain blurred with pleasure until Yumiko couldn't tell them apart. Her resistance crumbled as her orgasm built—inevitable and terrifying in its intensity.
"It's too much!" she sobbed, the confession torn from her. "I can't—ah!—can't think when you—"
Her words seemed to unleash something in Tatsuki. His thrusts turned punishing, the sharp slap of skin on skin drowning out her increasingly desperate cries. The bedframe protested loudly with each movement—too loud.
Yui could hear... she could wake up... she could—
The terrifying thought pushed Yumiko over the edge. Her orgasm crashed through her with devastating force, her walls fluttering around Tatsuki's cock as he followed her over, spilling inside her with a guttural groan.
"HAAA… HAAA… HAAA…"
Yumiko's breath came in shallow gasps as she lay sprawled across the tangled sheets, her body still trembling from the aftershocks of her climax. Tatsuki's fingers traced lazy patterns down her spine, his touch feather-light yet sending fresh shivers through her oversensitive nerves.
"You're still shaking," he murmured against her shoulder, his lips brushing her damp skin. "Good?"
Before she could respond, strong hands gripped her waist, lifting her effortlessly from the bed. Yumiko gasped as her back met the cool wall, her legs wrapping around Tatsuki's hips on instinct. The contrast between the wall's chill and the heat of his body pressed against hers made her toes curl.
"T-Tatsuki—"
His name dissolved into a moan as he slid into her with one smooth thrust, the new angle allowing him deeper than before. Yumiko's head tipped back against the wall, her fingers scrambling for purchase on his sweat-slicked shoulders.
"Feel good?" Tatsuki breathed, his voice thick with pleasure as he rolled his hips in slow, deliberate circles.
Yumiko could only nod, her words stolen by the sensation of him moving inside her. Each thrust dragged against sensitive nerves she hadn't known existed, the pleasure building steadily with every movement.
Tatsuki's hands slid beneath her thighs, lifting her higher until—
"Ah! Right there—!"
The change in angle sent stars bursting behind her eyelids. Tatsuki groaned in response, his forehead dropping to hers as their breathing grew ragged in unison.
"God, you feel incredible," he panted, his thrusts growing more urgent. "So warm... so tight..."
The praise sent heat flooding through Yumiko's veins. Her nails dug into his shoulders as pleasure coiled tighter in her belly, her hips meeting each of his movements with increasing desperation.