It Worked - Time to Try Some Things Out

With an excellent and highly motivated teacher and three of the best students in Hogwarts, it only took them a few hours to learn all of the spells. As the lesson winded down, Luna was staring dreamily at a picture of the moon hanging on the wall, finally beginning to speak as Harry concluded his lesson.

"It's past curfew, we should really stay here for a few more hours... It'll be much easier to make it past the Nargles if they're asleep and Filch is the only one they have employed to hunt us..." Luna said.

The other three quickly nodded, all used to Luna's roundabout way of giving advice.

"And of course, we need to practice these spells while they're fresh in our minds!" Hermione added, making the group give another round of enthusiastic nods.

It occurred to all of them but Ginny that it was possible for every one of them to be simultaneously trying out the agreement method, creating an incredible wave of pheromones affecting each one in the room. The only Weasley daughter may have been able to figure it out, had she not been pumping everything she had into trying to get Harry to have sex with her.

Within a few minutes they were all completely naked, each having cast spells to increase sensitivity to various body parts on both themselves and others. The girls were idly discussing each other's bodies, while Harry nonchalantly modified himself with the spells he learned so that on top of being more sensitive, he also gained several inches and a much more muscular body.

Ginny was the first to catch sight of Harry's new body, but thanks to the nature of the spell, she was unable to recognize that anything was out of the ordinary. She could feel herself getting wetter and gently sucked on the tip of her wand as she stared at Harry's throbbing manhood and six pack abs, wondering just how his dick would feel as it plunged into her throat.