They try but something doesn't work

"Let us try it here," Luna said and Hermione watched carefully how the blonde witch quickly swung her want, using the spell on Hermione. She wondered for a moment if this was a good idea, Luna probably wasn't going to be very thoughtful about the size of cock she would conjure.

For a moment the letters on the page seemed to glow a bit, rather faint and some sparks came from Luna's want but then that stopped and the two naked girls sat on the ground of the library, slightly confused.

"But that was the right spell," Luna said and tried again, this time with even less effect. "What going on?"

Hermione reached for the book and started to read through it. "I don't know," she said. "You did everything right." Then she remembered that she had caught a glimpse of some more general things in the front, so she quickly went to those pages. "Oh ...!"

"What is it?" Luna said, now fingering herself as she was still horny.

"Apparently this is such old arcane magic," Hermione said. "That simply casting a spell is not enough. The book is part of it and it needs to be charged."

"Charged?"

"There are some spells. They seem to have different effects."

"Can we do this?" Luna asked.

"I don't know," Hermione responded. "I am still a bit worried this is dangerous."

"Let's try, come on," Luna complained and Hermione flipped to the recharge spells, reading through them.

"I really can't read everything," she said. "But I think this one takes 24 hours."

"Better than nothing," Luna said. "Let's try."

"Okay," Hermione said and took a step back, pointing at the book. She said the incantation loudly and the next moment the letters started to flow again, this time greenish. A moment later it seemed that something grew from the page. Both witches gasped as they realized it was several long, cock-shaped, green tentacles, wiggling in the air for a second.

Then they seemed to smell Luna's wet pussy and the blonde witch, who sat next to the book with her legs spread, barely could react as the tentacles started to wrap themselves around her legs. As the first pushed into her pussy, she could feel a super intense orgasm, forcing her to give up all further resistance of being fucked.

"Luna!" Hermione shouted as she realized that the mass of tentacles started to pull her moaning friend towards the book. Her eyes got big as Luna was pulled into the page, disappearing from view a second later. She could hear a moan, and then the page became normal again, although instead of the words, it now had a picture of Luna, lifted by the tentacles, continuously fucked.

Hermione panicked a bit and flipped back, trying to find a spell to get Luna out. But all she could decipher was that she had to wait for the time to be up before she could release her friend. All while the book pulsed with fresh energy.