Yeah, you're not trusting that. Not wanting to hear another word, you run down the hall. Further from that serpent, and to... somewhere. Hopefully it leads out, but considering this is a dungeon you're not entirely convinced it'll be that easy. It is hard to keep up a steady pace, your big and broad arms do a good job slowing you down. Your body much heavier than it previously was, and there not being a single muscle on your legs doesn’t help with that weight. You can't continue like this for much longer, already feeling an aching as you're pushing yourself harder and harder.
But that's when that comfortable numbness reaches your brain. Where that venom continues to do its job by bulking out your legs. Short and skinny to thick and firm. Hairs dusting across it, skin hardening just as with your arms. Yeaaaah, that's it. That's the strong veteran you are! Your heavy breathing from fatigue replaced with comfortable and steady breaths. Flat chest getting larger, getting older. Treasure trail turning a light grey, firm pec sagging slightly from age. You've run a hundred dungeons, and this one isn't going to be any different.
Wait, no. You haven't run a single dungeon, this was your first one. This venom is going to be the death of you, it's going to get rid of the old you if you don't act fast. But how the hell are you going to remove it? Especially when it's getting so much harder to remember what you is you. Did you fuck one of the knight's squires in town last night? You think so... wait no, you're not gay. But also, those Naga's were sexy... it's the venom. You shake it off, even as your jaw squares and chin itches. Stubble growing into a bushy beard, senses dulling with your new age.
Stuck in this hallway, you look for an antidote. But the passage only moves in one direction, the darkness ahead dimly lit by the torches on the sides. The brown and bronze walls slightly reflecting the light. Helping you to see further and further and finally spotting a fountain. Yes, that'd be it! Some adventurers build healing fountains in the cruellest of dungeons, if the waters flow, then you can be cured! It's only a minutes run away. Someone like you can reach it. A veteran like you. An old bastard like you, August, a good fucking hunter.
Gods, it's a good life. Taking on town bounties, capturing monsters, and teaching them a lesson. When you were in your prime, it was easy. Get some rope, chains, and go at it all night. You outlasted orcs, gnolls, even a goliath. Sure, it's gotten harden now that your chin length beard is all grey and your head half bald. But you've still got that libido to go at it! Still ready to have your firmly muscled, but fat chest slap against the back of whatever monster you beat. Secretly, you had always hoped a monster would finally get the best of you. In a land as interesting as this, who wants to be human? But you don't want to make it too easy. No, they need to earn that fuck.
You reach the fountains edge, seeing the path continue further ahead. It's going to be a long one, so better take a sip. Your hands cupping the water, bringing it to your lips and drinking down the cool liquid. Mmm, it's fresh. A bit of it spilling into your beard as it shrinks in size. More washing down your beer belly as it thins to smooth and hairless skin. Some even landing on your erect cock, dribbling down the thick head as it reduces back to its earlier proportions. Muscle and age, all being lost as your mind clears. Everything becoming as it once was, you yourself again. Your very vulnerable and weak self within this terrifying dungeon.
"G-good. That would have been..."
"Great, boyo. We've got monsters to hunt."
There's no direction from the voice. It's your mind, or a part of your mind. Something inside speaking to you, a rough and older voice. Crafted with clear experience, confidence, and cockiness. After everything you've just gone through, you can't be entirely surprised. You were just a fat old hunter and... oh.
"Are you... August?"
"Am. Givin' me the body back?"
"No! It's my body!"
"Ours, boyo. And we got monsters to hunt and fuck."
You don't want to hunt monsters, you want to leave. But his words make your cock hard. Your thoughts drift back to those sexual murals. Maybe it wouldn’t be too bad, fucking some of the monsters here. But, no, you wanted a stable life, didn't you? That's why you went here, get some money, find a girl. It's the start of a good life.
"We need to leave."
"No, we don't."
"Yes! I'm not fighting monsters, I'm not going to become a monster."
"C'mon. You know you want to. Nothin' gets us harder than a beast I've just beaten."
"I'm not into that!"
"Hah, sure you aren't. As straight as this hallway, ain’t you boyo?"
His mocking tone makes you question yourself. You were straight... right? You try to think of some of the barmaids at the last tavern. Their curvy forms, plump breasts, smoothed skin. Long flowing hair and luscious lips. But all it does is make your cock go from hard to flaccid. You try harder, thinking back to those women. Their hourglass figure, smooth chest, and small cock. That little feminine guy snuggling against your own small chest. Yeah... that's nice. Having a nice one on one with him, bartender himself coming in and joining the fun. Big muscular bloke directing the two smaller men. It was so hot, August took over after a bit and…
"What were we talking about then?"
You can barely remember the conversation, all you know is that you're hard, and there's still a hallway to go.
"Nothin'. Just keep goin’."
"... Alright."
A little further down the hall is an intersection. Branching off left and right. You can see signs of travel on the left pathway, looks like muddy footprints leading to the splitting pathway. While the right instead expands, roof going from 10 feet to 30. Walls stretching out so far that you can’t see past them. You guess you’ll go…