Use the spiral staircase

You walk to the spiral staircase, but you notice a big silhouette, like a hulking swine wearing a leather suit and sniffing the air.
The creature observes you from the darkness and starts to run towards you.

In panic, you rush to the stairs, but a part of the floor collapses because of your weight and your heavy steps.

You land in a second basement, you are stunned because of the fall, and your ankle hurts, but the floor made of dirt absorbs part of the impact and you are ok.
Now you can see the hulking figure, it's a swine lady wearing a leather suit, she's smiling, spying from the hole in the ceiling "I'm coming for you, little human, I will arrive in just a minute" she says, her voice is teasing and menacing... Frightened, you try to crawl, but close to you, you notice a second swine... this one is as big as her, he's looking at you, angry, and growls. "I saw him first, he's mine, and I am the king, it's my right"

****, you try to stand up, but the swine puts one of his heavy legs over your chest saying "No filthy human, you can't be my bride, but you are going to be my sow, and believe me, you will love it"

The swine lady arrives in the room, she's nude, revealing her multiple tits, her pussy is dripping fluids, and you can barely endure the smell of these creatures...
You are at their mercy, and you beg them to let you go, explaining that you are coming from another world.

They understand, but you quickly notice that they know about humans, and they are planning to use you for her special perversions.
You panic, and you struggle to escape, but these hulking swine creatures are strong and fast... soon you understand that fighting them is painful and will make things worse. Weakened, exhausted, and with your body almost broken you kneel and beg them to have mercy.

As a sign of goodwill, the male says that he's the king, and you must offer your ass to him. Your ass? your stomach churns...
The female helps you to take off your clothes and bend your body on the floor.
With horror, you notice the huge balls of the male swine and his long, corkscrew-shaped cock. You think that you are going to throw up.
You feel the tip of his cock poking your ass... You try to resist but he puts one of his paws on your back and says that next time he will crush one of your arms.
Paralyzed by the fear, you stand still, and you feel his long warm cock invading your ass... you moan in pain as the creature reaches deeper.

You beg him to stop, but he laughs, the swine lady is laughing holding the testicles of the king. Moaning in pain, discomfort and humiliation, you feel the cock moving inside your body, and suddenly, a thick warm cum fills your bowels. You scream in pain, you struggle, but you feel the paw of the male swine over your back, and you stop moving immediately, accepting the semen of the king.

Your belly starts to grow, you feel heavy, and the pain is unbearable... you beg him to stop, you can't handle more cum...
But they reassure you, you are now a sow, and you must endure this!

There is a forbidden tale that tells about the unfortunate human turned into a sow, and his private, long, disgusting sessions with "The Swine King", but this is another story for another day.
This is...

THE END
Swine King's Sow ending