It goes well, until there is some interference

Hermione and Pansy bowed to one another, as is tradition. Hermione felt her breasts wiggle as they hung only slightly off her body. They then took their opening positions. Hermione thought about how exposed she felt with her legs parted like this.

Pansy took that moment to strike first. With a wave of her wand, an arrow appeared in the air and began to shoot its way to Hermione. Hermione acted quickly swishing her wand before the arrow reached it, transforming the arrow into a bird. She had it swoop around her before sending it right back to Pansy, with its beak aiming right at her.

An entire flock of birds emerged from Pansy's wand. She controlled them to guide Hermione's bird into a swarm that then flew right back at the naked woman.

Thinking quickly, Hermione used her wand to open a nearby window before summoning a gust of wind around her. As she spun them around, she felt the wind caress her bare breasts and arse. Once the birds were swept up in the air current, she guided them out through the window before sealing it with magic once again.

Hermione turned to see that Pansy had turned one of the desks into a great boar, which was now charging at her. In turn, she waved her wand and turned the boar into a rabbit, which she led out the door, exposing her bare arse to Pansy. Unfortunately for Hermione, this gave Pansy an opening. With a jab of Pansy's wand, Hermione's bare feet now felt as if they were glued to the floor.

As Hermione took the time to do the counter curse for the epoxy charm, Pansy struck. Hermione felt the same swooping presence over her before a thick fog spewed forth from Pansy's wand, enveloping the two. Hermione couldn't see a thing, but she knew that Pansy's Human Presence Revealing Spell meant that Pansy would know wherever Hermione was.

Hermione thought fast, waving her wand, she cast the supersensory charm on herself. Immediately her senses heightened. She could feel every speck of dust on the floor beneath her feet, every knot in her wand, every bit of dust that landed on her naked body. But more importantly, she could hear Pansy stepping around her, positioning herself to cast hexes.

Jinx after jinx and curse after curse came Hermione's way. Lights of blue, red, white, violet, and many more all came volleying towards Hermione from every angle. Hermione parried and blocked each one with the shield spell.

This had gone on for about a minute when a large gust of wind blew the fog away. Hermione had heard it coming and rushed to block it, but she felt Pansy stumbling, evidently surprised by it.

She looked at Pansy, who was clearly out of breath and frustrated and... Were those tears?

"Would you stop it with the blind spells already!" Hermione spun to see that Daphne was controlling the wind that guided the fog into a nearby chimney. "You two hurt Millie with that nonsense!"

Hermione looked at Millie who was on the ground, the left side of her face swollen from one of the stinging jinxes she had parried.

As Hermione apologized, she suddenly felt an all too familiar warmth course through her. She collapsed to the ground, feeling the most turned on she had been since experiencing the effects of house-elf sexual discharge. She turned and saw Pansy, pointing her wand at her, angry tears in her eyes.

Hermione couldn't control herself as she dropped her wand, moving her hands to her groin.

"Oh no you don't, you bitch!" Pansy whispered angrily. A flash of light and Hermione felt her fingers become as wiggly as jelly. As much as she wanted tried, she wasn't able to properly touch herself to undo the arousal hex, let alone cast any counterspell! She tried to position and reposition her hand so a finger might at least be able to rub against her enlarged clitoris.

Pansy jabbed her wand again, and suddenly Hermione's legs began to kick and spasm out of her control, knocking her hands away. She couldn't give up, the titillation was too much to bear!

As Hermione desperately tried to masturbate to at least give her some relief, Pansy waved her wand again, anger still covering her face. Hermione lost control of her entire body now. She was being tickled all over her body, unable to move her arms and keep them under control.

As she lay on the ground, twitching in pleasure and pain, Pansy sent two more hexes at Hermione. Antlers began to grow from her head as her front teeth began to elongate in a way that she had experienced back in her fourth year.

"There!" Pansy spat. "Not so brilliant of a witch when you're turned on the way you are, you filthy mublood slag!"

Hermione writhed on the ground, humiliated. As she tried to fight the effects of the spells and her fits of laughter (not easy while her senses were still heightened), she tried to reason what had happened. She had certainly outdone Pansy... But Pansy had attacked her when her back was turned, when she was trying to show mercy to her friend!

She could hear Pansy walk over to Millicent and help get her up before taking the dittany from the bag. "I'm taking Millie to the common room. Daphne... You-you fix Granger. And make sure she's on time for lunch, you hear me!?"

When they rushed out of the room, Daphne immediately got to work. "Finite," she muttered, and immediately Hermione's fingers became solid again, and the tickling, leg spasms, and arousal stopped. Hermione could now feel how wet the ground was where she had leaked all over the floor.

"Getting rid of the antlers will be easy, but the tooth situation will be tricky..." Daphne said. "I'm going to go ahead and shrink them down to what they were like after the last time that spell was done to you."

Hermione didn't reply. She felt absolutely ashamed of herself. She had let the arousal get the better of her again, and it made her lose spectacularly to Pansy. She just laid back, tears coming down her face.

Once they had finished, Daphne grabbed both her bag and Hermione's and helped her up. "Come on," Daphne started. "What you need is a nice, warm bath... We'll clean the dust off you from the duel and relax your muscles after what you just had to go through."

Daphne had Hermione lean on her as she led them up to the prefect's bathroom.