Mashiro bites into Nagumo's hand that has wrapped itself around her bicep, only letting go once she tastes blood on her tongue. "What the hell!? Dragging me into this random room, are you out of your mind, old man?!"
"Be quiet, partner," says Nagumo, dragging each syllable of the title, so erotic and wrong in that deep voice that always drove Mashiro just a little insane. "I need a little break, alright?" he explains, then continues: "If I don't take care of myself, I can't focus." His hand is around Mashiro's wrist, so tight she's sure her skin will bruise pretty in the shape of her old man's fingers, and then he's forcing her to grope his cock, hard and hot beneath his dress pants and Mashiro's eyes are wide open and she can see Nagumo's shabby stubble and the smell of cigarette ashes overwhelms her just right. Nagumo moans deep and rough when her grip tightens on his crotch and shoves his free hand between her legs, beneath the skirt he swears she shortens every single day, just to tease him, just to make him break, make him do exactly this: holding this little bratty, maniac schoolgirl down and making her take his dick, raw and with zero prep. "Be a good girl and help this old man out." He hums when he feels her growing wet against his fingerpads, and he rubs her hard clit through the soft cotton, so typical of a girl her age. His cock grows harder at the thought and he groans against her full cheeks.
"You're a molester," Mashiro gasps out, but her voice is weak and breaks often with tiny mewls, as if she's on the verge of tears. Nagumo lets go of her wrist and lets her undo his belt, whispering "good kid" into her ear for her cute deduction of what he was going to make her do next. "You're so fucked! Making a cute schoolgirl like me touch your gross old man cock," she whines and none of it sounds like an actual complaint—Nagumo knows as much because he feels her slick sticking to his fingers through her panties. He withdraws his hand to suck on his fingers, moaning at the slight tangy taste, then forces his lips on hers and his hands grope her tits, big and firm and tender. He bites at her bottom lip and licks into her open mouth. Mashiro weakly slams her fists against his chest and Nagumo takes it as complete and total submission. He pulls back and smacks her across the face before forcing her onto her knees. Mashiro whimpers, overly cute and young, like she wants Nagumo to really think about how genuinely wrong it is of him to take advantage of a high schooler. He can't help it, though, not really.
He wraps his fingers around his cock and smacks it against her glossed lips, then on her pink, wet tongue when she finally indulges him. "Just like that. Be good and help daddy." Her eyelids flutter and she moans around his dick as it fucks her throat open, vibrations sending chills up Nagumo's spine, guilt eating him alive if he could feel it. He groans and then grips one of her ponytails to force her to suck him off, from tip to base, her nose pressing against his graying pubes. "Yeah? Baby's so fuckin' feisty, but you just need daddy to take care of you, isn't that right?"
Mashiro slides a hand past her underwear and brings the other to sit small on his thigh, then fucks three of her fingers into her tight pussy, the sound loud and so, so lewd, and almost echoing the way she chokes around his big, adult cock. He pulls her off and, grabbing her by the twin-tails, throws her on one of the beds, things properly made that he's going to gleefully ruin. Mashiro, too, is something to be utterly destroyed. She's drooling all over, fat globs of spit sticking to her lips and chin, and Nagumo fingers her mouth then pulls out to drag her spit over her burning cheeks.
"Quick: deduce what I'm gonna do."
Mashiro stares at him from behind her lashes, her eyelids droopy and her mouth still open and drooling, tongue slipping out—Nagumo's moans come out rough and short as he masturbates to the ideallic picture of pleasure, dick wet with Mashiro's saliva. She shuts her mouth and swallows once, then twice, before clearing her throat and smiling up at Nagumo, mouth wet with spit and precum. "Daddy's gonna fuck his baby girl."
Nagumo groans and drops his cock, which jumps in place, in order to grasp Mashiro's cheeks and kiss her clean of drool. "Fuck, yeah."
"I knew you wanted it. I could tell from how much you look at my thighs, daddy. It's so gross. So wrong. You're…" She whines with a horrid high pitch as he moves her underwear aside and fucks four fingers into her.
"Shit, baby, you're so fucking wet. You hear that? Huh? Hear daddy fucking you, baby?"
"Yes, yes, yes," she gasps and then the very tip of his middle finger hits her cervix and she's clenching around him like a vice, tight walls gripping his fingers like they're all she ever needs to live, and she's screaming at the top of her lungs before descending into short giggles and airy moans.
"Fuck, I can't wait to have you around me," Nagumo says, eyes wide from the way Mashiro's tits bounce from her aftershocks. He doesn't waste his time before laying on top of her and forcing the head of his cock inside of her and she is tight, tight, tight and so wet that he feels his cock fucking her slick out of her. "Holy shit."
"Daddy!" she sobs, her hips rocking fast and steady in search of more, of that delicious shock of pleasure that drowned her every sense, arms wrapping over Nagumo's torso, holding him close to her so that his hard chest pressed against her soft tits. "Oh, daddy, so good."
"Yeah. Yeah. I got you." He slides a hand up her neck and cradles the back of her head with it as another brings her down onto his cock and she shudders from how his stubble prickles against her tender skin, so soft and supple and he can't help but dig his yellowed teeth into her neck and Mashiro cries "daddy, daddy, daddy". Nagumo is driven to the edge with every whiny gasp, every evidence of her age, of how sick he is to be fucking into her, of how much she needs her daddy. "I'm gonna come in you."
"Oh," Mashiro sighs and she tightens around Nagumo, back arching as she feels herself bounce on his dick, forcing it deeper and deeper, riding out her orgasm but not letting it end either.
"You feel so fucking good, baby. My good baby, my useful little detective, my cute princess." A large palm strikes her supple thigh. "There you go, there you go. Feels good, doesn't it? Huh? You've been asking for it."
"Yeah. Daddy…"
"I got you, Mashiro-chan." She comes again, though Nagumo suspects he's missed a couple of other orgasms, too focused on the sounds she lets out, pretty and cute and needy, just like she is and how deliciously tight. "Fuck, you pretend you don't like it but you're a little slut, aren't you? You love that I stare at these thighs," he digs his fingers into their soft flesh. "That I get hard from looking at your pretty little tits. Hm?" His breath is hot and wet against Mashiro's skin, hitting her pulse just right, and she keeps fucking herself on his cock. "You love that you've got such a perverted old man."
"Yes, I fucking do," is all she says before she's drowning her screams into his shirt and Nagumo really only needs this to come deep inside of her, cock kicking a little deeper before filling her up, and he fucks it out of her even as his dick softens, desperate for a hot and wet hole to fuck.
They lay with their clothes sticking to them with an awful sheen of sweat, cum drying against their thighs, a total silence in the room except for their gentle pants, and then a sudden groan. "My back's killing me."
"As if I would care about a molester's back!" Nagumo doesn't point out how she begged for it, factually. It's not worth the fight.