Her lying back on the chair.

Shoko leaned back against the backrest of the leather chair and spread her legs, hanging her calves over the armrests. Kenji stared at her moist pussy lips that was still leaking of his semen. She noticed his hesitancy and wondered if he was having second thoughts. "We are doing this to see if you can now ejaculate in the missionary position, Mr. Kataoka."

Kenji looked up to see genuine concern on the young doctor's beautiful face. Her methods were unconventional but they were definitely effective. He nodded slightly and stood between her legs, saluting her with his veiny erection slick with her juices. He wanted to fuck her. No, he needed to fuck her. If there was a regret, it was not sowing his oats before he got married at a young age -- all the possible romantic and sexual experiences he had missed out with different women!

Shoko looked down between the valley of her huge tits to watch Kenji slowly push the tip of his cock between the sopping wet folds of her snatch. "Yes, that's it, Mr. Kataoka," she cooed as she felt her cunt stretch wide apart by his thick shaft. He rested his hands on her knees for support while her pussy engulfed the last few inches of his cock. "Your wife is a very luck girl to have a wonderfully endowed husband."

Now consumed by lust, his wife and the sanctity of their marriage was the last thing Kenji was thinking of -- he only had one thing on his mind and that was fucking Shoko's tight pussy. He pulled out his shaft and before the tip of his cock would slip out and slammed the entire length back in, causing her to grunt. He repeated this, accelerating with every thrust.

"Uh! That's right... Uh! Harder... Uh!" Shoko begged as her enormous tits jiggled violently with every thrust her body absorbed.

Kenji growled while he furious pounded away at her cunt.

"Oooh, yes. That's it, Mr. Kataoka, cum for me," the doctor pleaded. "Fill me pussy with your seed!"

He had already cum three times and he was not sure of the extent of his virility. He desperately wanted to cum again but he wanted to continue plowing her pussy because felt like a snug velvet glove around around his thick cock.