While she struggles, she ultimately gives in.

[Submit.]

Harry's heart felt like it would burst out of her chest with how fast it was beating as she stared at Uncle Vernon. His cock drew her eye in a way that even a Snitch failed to do.

[Clean him off.]

She found herself taking a step forward to the bed before stopping.

"No..." murmured Harry, putting a hand on her temple to try and dull the sudden headache that had sprouted.

[Obey men.]

Again a non-verbal command swept over Harry's body and let her instinctively know how she could ease her pain.

"...I...No..." Harry found herself on the bed, crawling between her Uncle's hairy legs. "This is...wrong...!"

[Submit.]

'I...have to...fight...' thought Harry deliriously as the cum-covered sight of Vernon's fat dick steadily drove any coherent thoughts out of her mind.

[Clean him off.]

Harry's tenderly grabbed hold of the flaccid penis, angling it upwards as she opened up her mouth.

[Obey men.]

"Mmmmm....!" The throbbing pain in her temple instantly disappeared and was replaced with a deep sense of satisfaction the second Harry's plush lips closed over her uncle's cock. Small jolts of what felt like distilled sexual pleasure coursed through her body every time she licked up another patch of semen. Harry's ministrations grew more eager with every little jolt until it progressed into a full on blowjob where she was bobbing her head up and down on the once more erect dick.

"Mmm! Mmmm..." Uncle Vernon's balls tightened and Harry felt the dick in her mouth start to quiver before unleashing several spurts of hot cum into her gullet.

"Good girl..." mumbled Uncle Vernon sleepily. The praise created a warm and fuzzy feeling in Harry's chest that didn't feel like it came from the Oath.

[Get back in bed.]

Harry's tongue circled once more around the head of her uncle's penis to give it a final polish before she pulled away. The Oath made it's presence again and Harry found no real reason in not complying with it. She licked her lips, swallowing the extra semen that was stuck on it and grimacing at the discovery that several curly hairs came along with it. Brushing off her lips with her hand, Harry crawled up further, seeking to find a spot on the bed that wasn't taken up by her uncle's prodigious bulk. The decision was soon taken out of her hands however when her uncle wrapped an arm around Harry and deposited her on his stomach; it was a surprisingly comfy position that let her hear the steady and weirdly relaxing thrum of Uncle Vernon's heart beating.

"I'll fuck you again...later...Sleep..." muttered Uncle Vernon before giving a mighty yawn.

[Obey men.]

A smile graced Harry's lips as she feel asleep in her uncle's arms.