Any usage of the word 'teen' in this story refers to Segami being 18
*
The faint stench of mildew wafted through the dimly lit tunnel Segami and Miyumi were carefully trekking through. The rust-toned walls oppressively offered little space as the duo approached a short but steep incline that led to a small hole.
Miyumi's pale fingertips took the hem of her long silky white dress; drawing it towards her knees as the elf leaned up the incline; taking a slightly damp corner and carefully pulling herself through the opening.
"Its a tight fit, Segami. " the elf called out before finally pulling herself through.
The slender raven-haired girl gave a nod with an "Okay" as she stuck her tongue against the roof of her mouth; idly rubbing a finger over her sharp teeth as she eyed the situation. The girl brought herself up; sticking her face through the hole in a semi crouch as she slowly worked through.
With two steps of her blue-and-green striped stockings; the girl was partially successful; now practically sitting over the hole; her short black miniskirt draped over the big succulent backside now sticking out of the other side.
"Oh, my big fat butt won't fit. " the girl laughed out as she grips the sides of the cavewall around and pulls.
Miyumi approaches with a grin and crouches down, gripping Segami's shoulders to help pull her out.
Segami's young pretty face soon adopted a look of confusion before she suddenly uttered a low "Oooh?"
Miyumi's youthful face turned in confusion before Segami suddenly blurted out, "Something just pulled my underwear down a little bit and is touching my butthole. "
The half-elf's eyes suddenly shot wide open as the young girl leaned forward with a shaky stare. Her beautiful young face contorted into a cute look of slight discomfort as she furrowed her brow hard; biting her lip and blurting out, "HNNNNNN!"
The girl's body began to bounce slowly. Segami leans forward more as a low wet smacking begins through the wall behind her. Plap plap plap PLAP PLAP PLAP PLAP PLAP announced with growing intensity as the girl's body thrashed; her youthful visage reddening slightly.
"That escalated quickly!" the girl called out.
Miyumi watched wide-eyed as Segami cried out as her body bounces faster and with more intensity as the low smacking quickens to loud frantic wet slapping.
"Oh, o-oh, okay its seriously doing this to me! "
The elf gripped the teen's shoulders as the poor girl bounced frantically, her long raven hair spaying messily around her beautiful young face as she grunted and maintained a cute look of discomfort.
Miyumi shouted over the frantic pounding, "Just breathe and try to keep relaxed. It can't keep this up forever! "
Segami groaned loudly as SLAP SLAP SLAP echoed through the room, her delicate young figure bouncing quickly before the frantic slapping slowed as the girl's body began to still more.
She breathed a sigh of relief with, "He's slowing dow-" the girl's respite short lived as she suddenly gave out a long "Oooh! " and began bouncing in furious rythm as the slapping grew gradually from low plap plaps into loud wet quick smacking.
"Does it hurt? " Miyumi asked the thrashing teen as she reached down to slide a hand up the girl's shirt to massage her smooth belly.
The girl reached back to grip the walls around her, her heaving cleavage bouncing in her top as she utters a light moan.
"No, but it feels weird! Its big! "
Miyumi's hand slid over the teen's pale creamy belly as her other hand went to rubbing the girl's back.
The girl's bouncing slows as she grunts and looks down, puffing her cheeks and pursing her lips to breathe out slowly before she's cut off as her figure begins bouncing quickly anew amidst a renewed loud slapping from the other side of the wall.
"A-ah! He really likes my butt! " the girl cried out as she reached forward to grip Miyumi's shoulder with one hand; resting the other over her side as her sweaty figured bounced.
"Yeah he does. That has to feel pretty nice."
The girl groans and nods in agreement as a satisfied strange chirping rings out from behind the wall, "It doesn't feel bad but I'm seriously getting fucked up the ass by some weird monster!"
The teen brings pale fingers to the long strands of hair draped over her sweaty forehead, brushing them off as her figure bounces harshly.
"Why are you using my butthole!? " the teen shouted loudly before uttering a long moan as the frantic wet slapping suddenly intensifies; the sweaty teen bouncing furiously against the hole as she reaches down to hold her knees.
Miyumi reaches down towards the pack slung near her feet, "You are doing great Segami! I'm getting you some water. "
"O-o.h....Oh... Oh! " erupted past Segami's soft lips as the pounding slowed once more before picking back up to a furious slapping again as Miyumi withdrew a silver canteen, pouring some of the fluid on the groaning teen's forehead where it washes down over her creamy pale flesh.
