You wait quietly, barely breathing.
Spoon and stolen ice cream in hand, she leaves via a side door.
Moving quickly, you grab a paper-wrapped steak and sneak back to the library with Hermione.
"Alohomora," Hermione whispered, the door lock on the forbidden section clicking open.
You follow Hermione through a winding path between the towering bookshelf, failing miserably to avoid staring at her ass.
Hermione is mumbling to herself as she trailed her fingers along the spines of the leather-bound volumes looking for the one she wanted.
Bending at the waist, her peachy ass thrusts towards you, tempting you. You wish you still had some sleeping powder left over.
Thump
"Did you hear that?" you ask.
"2 grams of mandrake root," the distracted witch mumbled, now sitting on the floor copying a recipe from a thick tome by wand light.
You head toward the sound, your wand raised, lighting the way.
Three aisles over, you see an old leather-bound book lying on the ground. The cover is faded.
Picking up the slender volume to feel a strange thrill run through your body, your cock suddenly harder than it had ever been.
"Harry? Harry!" Hermione called, her voice worried.
You quickly tuck the book behind your back, tucking it into your waistband.
"Harry!" Hermione called again, her voice rising in pitch.
"Here," you say, stepping out into view.
"Harry, there you are. Don't run off like that. Where did you go?"
"Oh, uh, nowhere. Just browsing."
Hermione narrows her eyes. The book grew warm against your back, and the strange sensation started again.
"Come on, let's go before ‘Rover' out there wakes up," she said.
Under the cover of your cloak, you make it back without incident.
You couldn't be sure, but a few times, you feel like Hermione purposely pressed her ass back against your throbbing erection.