bad for her

The two sat poolside, Yumi was forcing her tongue down Dallas's throat whilst she was using her hand to grip his cock and straddle it teasing him as much as she could, he was lost in the pleasure as he had never felt this good before, she pushed him down and said
"Let me give you another suck" she said as she moved her mouth down his shaft again, causing his eyes to close with pure pleasure, but what he didn't notice was Yumi moving her hand towards her discarded School uniform when she grabbed her phone and suddenly she took a load of a photos of his bare cock, "got them" she said with an excited Giggle, "what" he asked sitting up, "Got you dick" said Yumi with a sticking out tongue "say goodbye to your life" she said as she stood up, suddenly Dallas began to feel strange, Yumi put her heels on as she looked at the photos on her phone, "Delete those now" said Dallas, Yumi turned around to gloat, "no way in..." she started but she was unable to speak as she witnessed something.

Dallas's back first began to bulge outwards and expand, his spine became more prominent through his back, his arms and legs became more muscular and veiny, his skin turned a demonic red and his eyes a pure black, Yumi backed away as this monstrosity moved towards her, she found herself turned on as his Cock expanded from its 8 inches to an almost monstrous size being 4 inches wide and 16 inches long, and his testicles expanded to the size of watermelons Yumi turned to run but in her heels she couldn't, the monster that was once Dallas grabbed her digging its claws into her and with it's other arm grabbed her leg and held it up
"Let go of me" she screamed but the monster didn't listen as it began to rub its cock against her clit, "Please no" she said but her screams intensified as it rammed its pile of meat into her vagina puncturing deep through her Hymen and into her womb, "Oh god" she said as she felt him began to thrust, it wouldn't slow down and acted like it had no sense of stamina as it wouldn't stop, she could feel her tits bounce up and down constantly and due to their size catching her in the face, her belly was bulging due to the monster cock, she could feel herself being strangely turned on by this, "oh fuck its so nasty" she said to herself as it slowed down, she thought it was gonna stop, but Dallas only became more rougher and then it came, Yumi screamed as she could feel each bit of its cum erupt inside of her, infact so much came that she began to spit up some of the cum, it finally pulled out leaving her pussy to flood out his cum, but the creature wasn't done yet, as she looked up as it came again onto her, leaving her looking like a bukkake victim but it was a single being, "What the fuck..." Yumi managed to say as she looked at Dallas as he emptied his balls by grabbing her and forcing his cock into her mouth as much as he could and finally emptying itself causing her to **** before her threw her near limp body into the pool staining the water and washing her off, she arose looking at Dallas as he walked off and she passed out floating on the water.