Nyana's Special Tummy Taxi Service
Nyana is a fairy who offers free and very fast passage across the world of Trakas. Since powered flight is still rare in the region, a trip across the ocean can take a very long time. The market is ripe for fae like her who know how to convince travelers to engage her service.
Her method of long distance transportation involves eating her passenger whole and alive, digesting them for necessary nutrition, and restoring them at their destination. The idea of melting away as food in a fairy's acids and enzymes is outright repulsive enough to severely limit her customer base, but on the flip side her schedule is light.
Tammy, on the other hand, is plum out of damns to give. She's got to get overseas to escape some soul hunters and she's got to be there overnight. So when she finds Nyana, she's all-in. Literally.
Once her meal is curled up in the safety of the her growling stomach, Nyana takes off and rides a storm as it swiftly carries her across the ocean. Her stomach affectionately massages Tammy with a luxuriously warm acid bath as it works to convert her into protein soup. Tammy is caught completely by surprise at how comfortable and pleasant it feels in this fae's tummy, so she gives in quickly and ceases to care about what's happening to her body. The noisy squelching of her body being relentlessly kneaded only drives her deeper into a sense of calm and euphoria.
Nyana's stomach grinds incessantly, groaning with waves of acid secreting all over her willing victim as she fly-hops from one cloud to another. By late afternoon Tammy is just noisy slurry sloshing around in her sagging stomach, slowly flushing into her intestines for a long and sensuous journey of further digestion and absorption. The more her body takes from Tammy's mushy goodness, the greater the human's level of bliss. Nyana keeps adjusting her magic to ensure Tammy's spirit is constantly feeling more pleasure as she diminishes to nothing inside the fairy's winding guts. She even sleeps on a cloud while her body is feasting on her volunteer prey. Her human meal transforms into more of her in the form of layers of additional fat, plumping her up dramatically.
Nyana lands near her destination, her body now immensely curvy and her boobs overly well-fed with almost 100 pounds of fat made from Tammy. Tammy's spirit leaves and falls into the gravity well of a new body, her pre-consumption clothing right there to put on. Tammy thanks Nyana for the pleasant journey and promises to turn to her again for future long-haul trips.
But.... the story ends well - with a bump in the ride. She goes practically skipping into town in her new, healthy and strong body, only to find those soul hunters waiting for her. It turns out that since people who get eaten keep their souls when they reform, soul hunters can find them anywhere. But here? This entire continent doesn't suffer soul hunters. So she's free to settle in and enjoy her life in safety.