OCxDeidara
Deidara told her what to do. She starts off with a tight fishnet shirt, a black bra and a black g-string. He tells her to take off the bra and panties. He's laying down propped up by pillows, with just his pants on. He tells her to ride him, so she pulls his pants down, takes out his member and uses her fingers to guide herself on him. He was already hard coming in, but when he told her to strip he got harder.
She can control how far she goes down on him and the speed and has her hands running over chest and stomach, but as she goes faster her hands stop wandering as she concentrates on her budding orgasm. The inside of her thighs were sensitive and as they rubbed against his bony hips as she rode him it made her want to go faster, to satisfy that itch. Her back arched from the exhilarating feeling as she moaned from a particularly good push. Her bodies hot and her back sweaty, but the cold air hitting her sweaty back cools it making her feel every sweaty trail. Pushing her ass out more to hit his thighs, her chest forward into the cold air, and her head tilted back showing her throat.
Deidara watched as she went down on him, the way his member went into her. Her nipples went through the shirt, but the shirt was tight enough that the thread pushed into her tits. When he felt himself nearing the end she started going faster, riding his dick, her breasts moving deliciously faster. Then when he couldn't hold out no more he saw white and became deaf all else.
He pushed up into her a last couple of times but he had went soft. He was done and she wasn't, he had just come back from a mission so he was tired and likely wouldn't finish her off. So she just got off, went and took a shower, he was asleep when she got out, and went about her day.
I deliberately wrote this without explaining the characters appearance because I want anyone to be able to fit themselves into that role to make it better. Sexual expression and masturbation is healthy, and women can be sexual beings as much as men.