Some girl on girl fun to use up the power

Luna smirked and bend over to Hermione. "What if we use the energy to have some fun now, then charge it up again?"

Hermione was surprised but joined her friend in a kiss. The two girls stumbled backwards into a stall, then Luna pulled out the spellbook and her wand, reading through some spells.

"This one," she said and flicked her wand. The wand vibrated for a moment, then started to change its shape, taking the shape of a flexible, shiny double dildo. Hermione gasped but Luna just sat down and pulled her skirt up, revealing she was not wearing panties at all. Luna was wet as hell again and pushed one end of the dildo into her pussy with ease. "So you joining?"

Hermione hesitated. But then the hornyness of everything overcame her and so she went down, pushing her own panties to the side and pushed the other end in. It was a decent size and she had the feeling, that it was pulsating and changing its size as soon as it had entered her pussy. Of course this was not the same like a boy, but for some reason she imagined Ron using her.

"Oh my ...," Luna moaned and pushed the toy deeper into her. "This feels so good."

Hermione was feeling the same and so both girls rocked back and forth, fucking the toy. Then, after like fifteen minutes, both of them felt that the dildo started to pulsate even more and a moment later, both had massive orgasms as they felt the toy explode in their pussies. Magic cum leaked from their pussies as Luna's wand dropped onto the ground.

"Is this ...?" Hermione said as she looked at the mess leaking from her pussy.

"No worries," Luna said. "The spell said that it won't knock you up."

Hermione caught a breath and both lay there for a moment. "Seems the spell used most of the energy of the book," she said as they finally got dressed again.

"We need someone to charge it up," Luna said. "And while I enjoyed the tentacles, I do not need to be trapped in them again."

"Maybe someone else," Hermione said. "Some of those spells say that the subject won't remember clearly what happened to them."