"No Mary!" Ty shouts, making her gasp and immediately stop before she could speak again. "I want to have sex! I CRAVE IT!"
He lunges at the poor girl and starts ripping off her clothing, making her scream in sheer fright as she desperately tries to escape by flailing and pushing against him. However Ty had a unknown amount of strength of which he never felt before, the succubus must've gave him some corruption to where he had the strength of someone twice his size. The teenage girl's struggle was futile as Ty rips off the last article of clothing, making her completely nude and exposed to his throbbing cock. She did not shave her pubes like the other girls her age when puberty hit, showing off a nice bush above her moist folds.
"Ty please don't!" She cries out as her legs were forced wide open, completely helpless as Ty's body-weight falls on top of her. She starts hyperventilating as the tip of his pulsing shaft prods her delicious pussy lips, and feeling it thrust all the way in without warning. Mary's virginity was taken, and her screams abruptly stop as her voice gave out for a brief moment. "A-aaa-..."
'Fuck yes! Virgin pusssyyyy!!" Ty starts drooling as his mind begins to break from the extreme amount of pleasure he was feeling, humping his blood and juice covered cock deep and hard into her. The more he fucked the once holy virgin the more lustful he become. The corruption within his body slowly began to rise, his eyes turning bright yellow and his teeth becoming sharper and longer. "AAaaahhh yyyeeeeesss!! I can feeel the corruupttiiooonnn!"
"HAHAhahahahahaaa.." A wicked, female laugh echoed in the room, and the succubus that took in Ty appears from a dark portal overhead. "Defile her! Force her to give in to her lust!"
Ty lets out a inhuman moan in response to the succubus, all his teeth were no longer human like, instead they were razor sharp and his tongue long like a tentacle. Besides those changes, he was still human for now. The arousing aphrodisiac scent that came from the succubus filled the room to increase Ty's arousal as well as Mary's. She was no longer wailing and crying, her face turning from pain to pleasure as her first moans ever began to come out of her mouth.
"It f-feels so go-gooood!" Mary moans out as she wraps her arms around Ty's sweaty body to keep him thrusting deep and close, having never had any sexual feelings till now and they were cranked up pass one hundred. The blood from her broken hymen slowly faded away till she was completely cleaned, and her pussy began to flood with a wetness unlike any other. "Harder! I want mooorreeee!!"
"UUUUUUUUGGGHHHH!!" Ty groans as ram horns grow from his forehead, causing intense pressure being released but making him more turned on than ever before. "IT FEEELLSS GOOOOOOOOOOOOOOOD!!"
"M-My Boooddyyyyyyyyy!!" Mary felt hard waves of pleasure slam all through out her body, causing her muscles to shutter and spasm as her first small amount of corruption begins to flow in her veins. Her breasts grew into E-cups as her eyes turn dark yellow and her tongue becomes long and fork-like. "M-Moooree! Give me more I want more more moooreee!!"
"CCCCCUUUUMMMIIINNNGGGG" Ty groans as loud as he could and climaxes hard into Mary's extremely wet and tight pussy, cumming huge amounts of semen that were abnormal for someone his age. The teenage girl cums as well and squirts all over Ty's crotch, causing her pube bush to be completely soak with her juices. Mary moans out and climaxes again as pressure is felt on her head to have a pair of her own ram horns form. "Tyyyy I feeel amazziinnngg!" She slithers her tongue at him, making the barely-demon boy reply back with a deep kiss causing their tongues two twirl around one another.
"You have completed your first steps into achieving every lasting pleasure," The succubus said to the two teenagers, pointing to the wall next to them to make a metal door appear. "Step through whenever you are ready to continue on. There is no going back now..." She opens a portal above her and flies up, closing it quickly after to watch over the two humans out of sight.
Ty and Mary laid there for a long moment, their lust slowly draining down low enough to not be blinded by it. He pulls out of her making cum flood out of those mouth-watering pussy lips, standing up before helping her stand up as well.
"Ty...I want to be a demon now!" Mary hugs him and locks her eyes onto his, her personality almost completely changing from s shy-timid girl to a free-will sexual deviant. "I was a fool to believe in God for this long, when I should've been worshiping Satan this whole time!"
"Then let us resume our trial." Ty wickedly smiled at Mary and takes her by the hands, knowing that they will have to do more extreme things to achieve true demon-hood. But now Mary was willing as much as Ty, which will make the whole ordeal that much easier to go through. He leads her to the door and turns the knob, slowly pushing it open to step through to the other side...