Double her sensitivity.

As Jaune began to slowly fuck Neo, causing her to breathe heavily, Jaune considered for a moment whether to try harder to get her actually moaning. He decided to use the Note, and while fucking her, grabbed it and wrote, "Trivia Vanille's sensitivity in her erogenous zones will be doubled whenever Jaune Arc is having any kind of sexual activity with her." He then set the Note back down, and resumed fucking her.

Her eyes widened as the extra sensitivity hit her, and her tongue lolled out as she gave a soundless cry. Huh. Guess she really WAS a mute. That, or just really, REALLY dedicated to not speaking in any way. He chuckled, and went harder, getting her to grip the sheets.

Emerald was meanwhile fingering herself even more frantically, too into it to even notice Jaune using the Note right in front of her, luckily for him, might have caused problems if that moment of carelessness came to bite him. Regardless, Neo kept on humping backwards onto him, greedily seeking more pleasure as he kept on fucking her.

Soon, his cock pulsed inside her pussy, and he gave her ass cheeks a squeeze as he grunted, and released his seed into her, and her eyes shot open as her own orgasm thundered through her body. They remained frozen in place for a moment, before Jaune pulled out, and collapsed with her with him on top of her back as they caught their breathes.