She starts with hollowing her

Not wanting to hurt her next trophy with her monstrous cock and load, Luna melts Ginny’s organs before she wakes the redhead up. She casts the spell over Ginny’s slumbering body, and watches the subtle transformation with her dick firmly in hand. Ginny sighs in her sleep, her brow wrinkling as her internal complexities dissolve and simplify, making her anatomy almost tubelike under the surface. Her hollow stomach collapses into itself slightly, deflating, but quickly reinflates to her normal shape as she breathes cool air into herself.