He had spent months picking his target. He had always had a fetish for fat girls. He never enjoyed skinny twigs. People considered it an obsession, he considered it a desire. He wanted a fat girl for his own. Thunder thighs a big booty you name it. But he couldn't just make her fat in an instant. No, because then he couldn't enjoy the show of her gorging herself. He would help her of course. The instant weight gain spell would work. Makes victim gain ten pounds instantly. He had found miss Hermione Granger fit the bill. She was perky and smart and soon his perfect girlfriend. He looked at her from a far, imagining her with chunky thighs, basket ball breasts and an ass that took up a whole chair. He was not only going to make her never want to stop eating, but he was going to make he love her body. He was going to make her love him.
…
Hermione was studying in the girls dorm when Ginny walked in. "Hi Ginny!" Hermione cheered. She sat there reading the book Wizardry and Me: The Fundamentals of Witchcraft.
"Do you ever stop reading?" Ginny asked as she gathered her things.
"I might if this books content gets any more primitive. The righting is so simple a first grader could read it!" Hermione complained.
"Then don't read it!" Ginny suggested rolling her eyes.
"I've never quit on a book!"
"Whatever! I'm gonna go meet with Harry. He's giving me a broom stick lesson!" Ginny squealed. Skipping out of the room. After a few moments of silence, there was a snap. A glass of pumpkin juice with a little note. To a beautiful girl from a shy boy.
"How sweet!" She giggled. She drank the juice quickly, she really was parched. Her stomach growled. "how odd, I'm starving." She looked at the clock. "Thank god it's lunch time." Hermione dashed to the hall and quickly found Ron and Harry.
"Hey Hermione!" Ron grinned.
"Hey Ron," She replied, not breaking eye contact with the food. Harry and Ron returned to their conversation and didn't notice Hermione pile on her plate. She had piled 8 sandwiches, 3 large bowls of soup, 6 cookies and a slice of cake. She felt so stuffed and looked down at her bloated tummy and covered it. "I'm uh gonna lay down!" She rushed off to rest her tummy. She laid down and then just fell asleep.
….
He watched his prodigy inhale food like she'd never eat again but he was too impatient. He wanted to see her be a little plump. His mind just went wild thinking of her pigging out. He managed to slip into the Gryffindor female dormitory. His mind managed to locate her based on the fact it had a thick book on it. "Nia Remora!" He chanted. It was a simple sleeping spell that was activated through scent, much like chloroform. He hid in her closet, and waited. She dashed in and once he was sure she was asleep, he flipped her over. "Istao Enlargentia,"as he said the spell the are he pointed at became bigger. He did that over and over again. First her face became rounded like a circle. "Let's puff up your cheeks," he whispered, making her have puffy little chipmunk cheeks. "Bigger thighs my love, much bigger," his wand gave her slightly bigger thighs. "well you need bigger boobs. MUCH bigger." With a zap her boobs were 2x bigger. "You know you need a fluffy pillow tummy," he made her tummy muffin top her skirt. He continued this giving her plump fingers, fat feet and finally he flipped her on her back. "Now let's give you a big ass. Nice and plump," he enjoyed this. He zapped it many times until it was 4x bigger. "Just for security," he walked to her clothes. "amplitudo!" he shrunk her clothes one size. "Ta-ta my chunky angel." He left her grinning.