You and the Dragon engage in battle you dodge and block some of his attacks, blows, and firebreath, and whenever you do you counterattack. Unfortunately it doesn't seem that you are hitting the right parts of his body because you think you are hitting potential weak points on him but he doesn't seem like he is getting hurt at all, he is not even bleeding blood, eventually you start to feel like you are getting tired, you can't keep this up forever, let alone for a long time or even a short while, it looks like you are done for.
The Dragon hits you and you lose your shield, it is destroyed, you can't block anymore, you get hit again and you lose your armor, you are totally, completely, really, and truly naked, and nude now, even your underwear is destroyed, eventually he hits you again you feel like you are dying now, you fall down losing consciousness.
You later regain consciousness, you are still alive after all, however you look like you are kept in place by magic you are lying upwards, your male private parts are visible to the Dragon as well as your anus. Your belly button is also visible, the Dragon puts his Penis in your human butthole and rectum and he ejaculates his sperm in it and it hurts, you feel pain as his sperm causes powerful magic to course through your body, your penis, scrotum, urethreal canal, prostate, vas deferens, and testicles become your clitoris, labia majors and minora, urethral meatus, uterus or womb, Fallopian tubes and ovaries respectively, your asshole is separated from your Vagina by a Perineal Raph.
Your skin itches and turn into hard and tough scales, your head enlongates into a muzzle and snout, your hands and feet turn into paws and your fingernails and toenails become claws, you have wings and spikes sprouting out of your back, and your navel or bellybutton or belly button becomes that of a Dragoness's, your belly button also either stays as an innie as it was when you were a human or if it became an outie, it now becomes an innie. Lastly you feel pain right out of your spine, coccyx, tailbone, and butt just above your bumhole, as your vertebrae breaks open the muscle, fat, and skin of your butt just above your butthole as it first starts a a small nub and bump and it eventually grows to be 174 centimeters long and it grows muscle, fat, skin, and scales, whenever you move, shake, wiggle, wag, or your naked butt, it moves, shakes, wiggles, or wags with it, oh no it is a Tail, the one and only true and real thing that separates humans from the animal kingdom, it is the crowning moment of horror and realization that when you see that you have a tail that is connected to you and on your body and your butt, bottom, rear, bum, rump, and your hindquarters, and it is just above your pucker and one that moves, shakes, wiggles, wags, when you move, shake, wiggle, wag, or move your butt, and it belongs to you means that you are no longer a human but nothing but an animal now, having a tail also means that your butt is now your tail-end and your sphincter is now a tail hole or Tailhole, furthermore it is a Dragoness's Tail. You are now a Female Dragon or a Dragoness.
You are now doomed to be the Dragon's Dragoness mate forever, you cry tears of sadness that your quest has ended in failure, you can never turn human again, you will always be a naked and nude, and you can NEVER wear any clothes of any kind to hide your nakedness and nudity EVER, not even house or mountain sized ones. You will Forever be a Naked and Nude Dragoness with your Dragoness Belly Button, Butt, Tail, Anus, Perineal Raph, Clitoris, Urethra, Labia Majora, Labia Minora, and Vagina always naked and exposed to whoever happens to see you and your Nude Dragoness Body. You certainly can not go back to your village, kingdom, or the arcade back in reality in your own world. You are stuck here as the Dragon's Dragoness mate for all of eternity and even beyond that.
GAME OVER