Ria makes things interesting.

"You know..." Ria said, pulling away from Glynda for a moment. "You could fuck both of my rear holes at once with the Sex Note..."

"...how would I do that?" Jaune asked, pulling out as he blinked.

"Isn't it obvious? Just give yourself a second cock temporarily, and double the pleasure for both of us..."

Jaune looked at her for a moment, before deciding what the hell, he'd give it a try. He took the Note as Ria returned to licking Glynda, and wrote, "Jaune Arc will grow a second shaft for his dick, identical to the first one, only above it. This will only last until said shaft cums in Ria's ass, at which point, it will retract back into Jaune."

Jaune then moaned as the skin above his shaft distended and warped until it had reshaped into a second cock. "...this feels weird," he admitted, before plunging both of them into Ria, one in her pussy, the other her ass.

"Meh, it's not for everyone," Ria replied, taking her face from Glynda's cunt again. "Still, always worth trying... Never hurts to get creative with the Note..."

Jaune nodded, and proceeded to resume fucking Ria, grabbing her hair again as she resumed licking Glynda, who was squirming from each lick.

While Jaune still found the prospect of having two cocks even temporarily a little bizarre, he couldn't deny the results as he felt the stimulation from both, and could tell that Ria was really enjoying it too. It did make him question how much of the Note's potential he was really using, but he decided to focus on fucking for now.