You take a look at the writings, and you decide that it will be better to hold the gate against a small demon.

The wizard prepares for his research and casts a spell.

A small breach opens in the floor. A red light is coming from inside it. You move closer, drawing your sword and taking advantage of the higher ground.

But nothing happens. There are no lesser demons trying to pass through.
However, a huge arm comes out. Its whole body must be huge!!

The wizard screams "Move closer to me, now!"
He casts a binding spell, and steel shackles materialize around the wrist of the big creature, binding it inside the breach with chains.

But the creature grabs your leg, and when you try to use your sword to get free, you notice that its skin is harder than steel.

Instead of trying to pass through, the creature pulls on your leg and drags you into the breach.

The darkness is too intense. You can barely see his form, only a shadow and a dim red light.

Then... the breach closes, and you start to see multiple eyes, blood, chaos, and unspeakable horrors. You panic, and your mind can't endure these terrifying visions. You close your eyes, but the images persist, you are paralyzed because of the horror... This is the Abyss, and you are doomed.

But a big hand covers your eyes, and the visions stop.

A deep voice speaks. It sounds like someone who doesn't know the common tongue but is making an effort to communicate with you.
"I cover eyes. Mind protected. Horror stop. Mind protected. Protection has price. Accept my protection."
Terrified, you nod your head desperately.

The creature slowly takes off your clothes. When you resist, he removes his hand from your eyes.
You see him. He is a huge humanoid with the cranium of an animal instead of a head, bound to the Abyss by steel chains with heavy weights, like a prisoner.

Then the visions begin again. The horror is too much to endure, and your mind feels like it's about to break.
The creature covers your eyes once more.
You understand now... you can't resist.

He continues to take off your clothes, and you feel ropes around your body, then, something cold pressing your penis, small... like a cage.

But then, he adjusted his position, holding your belly and forcing you to sit down between your legs. Something big and hot is poking your anus.
You start to beg with desperation, but you can't resist, any torture is better than the visions of horrors from the abyss.

The pressure grows, your ass is tearing apart, no lube, no preparation, you think that you are going to die.
However, the huge cock slides inside your body, and you are still alive... but the pain is unbearable, your body feels so full that you have difficulty breathing, you tremble, but the pain continues... every slow thrust is agony.
Finally, you feel a hot fluid invading your bowels, he takes off his cock, and you leak a hot liquid from your ass, it keeps coming out, you are filled like a balloon.

You take a few moments to rest, and after this traumatic experience, it's hard to speak.
Then, it starts again...

Slowly, you notice the pain fading away. Your body begins to feel more elastic, almost like rubber.
Something is bouncing on your chest, it feels heavy... Do you have breasts?? You don't dare to touch, you don't dare to resist.
Then, you hear a metal object fall, clanging against the floor... the pressure on your penis banishes, you feel free, you your penis is completely numb and you can't feel it...

You don't know what's happening, but with each thrust, your body is slowly changing into a slimy, rubber-like material. After a full day and a full night, he says that you are saved. Now you are one of them, and you can open your eyes.

You can't move. You can only crawl like a worm.
You don't have any legs, or arms, your body is almost transparent... this is terrible, but your mind endure...

But that's not the worst part. Now you can fully understand the language of the demons. He explains that you are now a lesser demon, a "Condoom" If you serve well, you may one day rise in power.

But the trick is to keep your mouth shut while you are being used, and when you are discarded, you can spit everything out.

The same day, you have your first experience as a condom... You are tightly fit on a demon's cock, it feels good, but then, you can see the filthy hole of another demon, and you hold your breath... this is...

THE END
Bad Ending: Condoom transformation