Its Undoing (An Erotic Pennywise Fanfiction)

Pennywise didn't always feast on flesh and feed on the fear of children. He was once a deity like Maturin, the turtle. He ruled an entire civilisation by the side of his soulmate, Xumer.
Till the day she was killed and Pennywise committed a crime so horrific, he was banished to live amongst mortals in form of a parasite where he has spent a thousand years exacting revenge from humanity for Xumer.

Olivia Gray is running away from her past. Coming to Derry was her attempt at starting afresh but an even more complex and cruel fate awaits her there.

When Pennywise wakes up after 27 years to start his nightmarish reign he discovers something that shocks him to his very core.
Xumer is back.
She calls herself Olivia Gray and doesn't seem to recognize him. So he resolves to use whatever means necessary to make her his possession again.

Themes, characters and lore based on the book 'It' by Stephen King and the movie adaptation.

Content Warning: Contains mature themes and explicit language. Reader discretion advised.