Harry knew he shouldn't be doing this. It was completely insane. He stood, naked from the waist down, in an auditorium of over a hundred other witches and wizards. Only the Invisibility Cloak around his body gave him any modesty. He had already dodged the Minister for Magic, and circled around a table filled with all the wealthiest benefactors in wizarding society. None of them had any idea that the Chief Auror was wandering around the room in a shirt and nothing more.

"Our next talk," said Susan Bones, running the event for the night. It was a conference to celebrate ten years since Voldermort's defeat, or Victory Day as it was known. "Is from the Minister of Magical Law Enforcement, Ms Hermione Granger."

A round of applause broke out and Harry stood to attention in more ways than one. His eyes were glued to Hermione's form, still as curvy and alluring as ever. Her round bottom was squeezed into a pencil black skirt, and Harry remembered his birthday several years ago, the first time he had fucked her. His cock was at full mast in a second, the Invisibility Cloak hiding it from view. That birthday mistake had been repeated a hundred times since, and tonight would be no different.

"Thank you all for having me," Hermione said from stage. The lectern she stood at hid her mostly from view, only her shoulders and head visible to the crowd. It was why Harry had made sure the event planners had ordered it in. "My talk is on modernising our legal system."

Harry didn't waste another second. Hidden from view, he walked up the stairs and joined Hermione on stage. Closer in, he could see the swell of her breasts in her shirt, the loose strand of brown hair tucked behind her ears. Smirking, he walked up behind her as she worked her way through her introduction, her words ensnaring the room. His hand reached down and squeezed one soft, plump cheek of her backside. It still felt divine.

"And that is why it's critical that, oh!" Hermione squeaked. On the two screens at the front of the hall, everyone saw her eyes widened. "Sorry, uh, stubbed my toe."

Harry grinned and leaned in behind her, making sure she could feel the tip of his shaft pressing against her bottom. "Don't think I've forgotten," he whispered into her ear.

The ability to do wandless magic came as a benefit at the most unexpected of times for Harry, like now, where his wand was with his trousers, tucked inside his office. Instead, Harry reached out with his hand and thought a silent incantation. Hermione paused again, biting her lip, before carrying on with her speech. Her skirt had vanished. She now stood at the lectern in front of a hundred people naked from the waist down. While the lectern hid her from view, Harry looked down and saw that perfect ass, those thick, tanned globes waiting for him.

"We defeated Voldermort ten years ago, but we still use a system that was unable to cope with, oh Merlin... yes, with a system unable to handle him," Hermione managed to say, a blush beginning to creep up with her neck. She had felt the lubrication spell preparing her. She knew exactly what was going to happen next.

Carefully letting his cock slide out of the Invisibility Cloak, Harry wasn't sure where he wanted to look. Did he want to see his cock slide into Hermione's perfect ass, to part her cheeks and disappear into her tightest hole? Or did he want to watch the big screen, to see her face as she felt herself being fucked in front of an entire crowd of society's biggest players. He settled on the screens. Pushing his hips forward, feeling Hermione's cheeks spread for him, Harry watched with lust as Hermione's face pinkened and her eyes went as wide as saucers. The moment his head slipped inside her ass, her lips parted to form a perfect O.

"Mmm, fuc- fundamentally, our system is not fit for - for purpose," Hermione panted. Her hands gripped at the lectern as Harry pushed himself deeper inside her. Soon his hips were pressed against her smooth cheeks, his entire length buried inside her behind.

Harry wasn't too cruel. He didn't take her hard and fast, no matter how much he wanted to. Every fiber of his soul called out for him to grab her hips, to rail her against the lectern until they were a panting mess. Instead, he moved slowly. Almost painstakingly slow. His hips moved out and then in, gently sliding himself back and forth within Hermione's tight ass. The pleasure of this never changed. Fucking her like this still felt as good as that first time in his office with the Polyjuice Potion.

His eyes moved between the two wonderous scenes in front of him. Occasionally, they would drop to admire the view of his cock wedged between her tanned cheeks. It looked obscene, his thick length pushing apart the globes of Hermione's round backside. He felt his balls churn at the view. So, he looked up instead at the screens, finding it just as arousing to watch Hermione try to hold it together as she was buggered. Her face was pink now, her eyes almost shining. Her teeth frequently slipped down to push down on her bottom lips. Maybe to the rest of the room, it looked like nerves, but to Harry, he knew exactly what was coming. He felt her hips begin to rock back against his thrusts, taking him deeper into her ass.

"So, with this in, oh, in mind, oh, so big, so big a problem. Merlin, I'm going to cum," Hermione said, her voice breathless. Her hips started to buck, bouncing back against Harry's as her ass clenched around his cock, her orgasm hitting her hard. "Going to come to my conclusion! Yes! My conclusion!"

Harry lost all sense of her words as his own orgasm consumed him, lost at the tightness of her ass, his sight exploding in pleasurable white light. He emptied himself inside Hermione, filling her backside with his seed as he swallowed back his own moans. It'd been a while since he had orgasmed that hard.

He allowed himself a moment to regain his composure, silently panting behind Hermione as she finished her speech. Then he pulled himself free of her, and with a muttered spell, her skirt reappeared over her reddened bottom. Her face still looked pink, but at least if anyone came up to her, no one would have any cause to suspect what had just happened.

"Happy Victory Day," Harry whispered into her ear, before walking off the stage and heading back to his office. He had to put some trousers on before his speech.