Accept to become their servant

The goblins laugh with delight as they fasten the rubber panties around your waist.
No... it can't be true, not that...

Your new master explains the basic rules, you have to work cleaning the tents and you have to satisfy your master, if you perform well, he will let you empty your bowels. If not, you have to endure until tomorrow. He explains that most girls only endure 3 days and after that they perform any kind of tasks and they willingly satisfy their cocks.

After a day of hard work, you are sweated, you squat, and you feel the rubber panties stretching your anus, you have an unnatural sensation on your sphincter. You ask your master to let you empty your bowels.
Your master smiles, and points at his cock.
You start to blow him, you try to perform a good blowjob, but the smell makes you gag, and when he cums inside your mouth you almost throw up.
He caresses your head and says that you must sleep, you will make it better tomorrow. You beg him, but he says that today you are not allowed to release.

The next day you feel sick, hand e pats your swollen belly where waste already presses uncomfortably. *"You'll hold it all day, won't you?" The other goblins laugh as begin your chores.

Every movement is a struggle, your belly hurts when you bend to scrub filth from their boots or crawl to collect their discarded bones.
The goblin delights and makes you work harder, laughing when you whimper as the pressure builds. At last, when the tents are spotless he grabs your ass and take a look of your anus.

His clawed fingers poke at the swollen, ruined flesh of your anus... stretched and protruding obscenely from the relentless pressure of the rubber prison. He laughs and says. "Look at this! It's like a flesh volcano ready to burst!" and he squeezes the abused ring of muscle between his fingers.

"Don't worry", he continues, "perform a good blowjob and if you take my cum, you will be allowed to release, deal?"
You swallow your pride and you nod your head.
"Say it!" he screams, and spanks your ass. You obey and say "Yes master, it's a deal"
"Tsk tsk, such a greedy hole—see how it sucks at the air, begging for more?" He spits on the inflamed flesh, laughing when you flinch.
He points at his cock again.

This time you are decided, on all fours, you fight your gag reflex, and you start to blow him like a professional.

When he cums, you are finally allowed to release, but this last scene is **** and disgusting, and may not be well received by the general public, but there is a Forbidden Tale that speaks about the details of the release and your miserable life serving them.

Bad ending
Total control ending

Forbidden Tale extra:
If you dare, you can check for extra scenes at https://www.patreon.com/posts/diamond-endings-84574475
Check "Yes master goblin"