Emi's ass

Despite everything, Emi wasn't entirely sure she was ready for Ichiro to penetrate her ass. She had never had a man in her ass before, it always being the sacred space that none of her previous lovers had penetrated. But as she protested, she knew that it was in vain. If Ichiro wanted to slid his cock into her ass, she was going to. She was fully and entirely committed to being her son's sex toy. So, instead of protesting, Emi lifted her hips as best as she could off the tile of the library floor and waited for her son to take her.

"Emi," Fumiko teased. "You are being such a good little slut for your son."

"Yes," Ichiro agreed. "You are a good little slut, aren't you, Mother?"

Emi said nothing and waiting with anticipation for her son to take his pleasure from her body. He had arranged this situation, after all, giving all of his energy and effort into making this happen. He had been so hard to motivate all of his life that she wanted to reward him for having taken so much initiative... even going so far as to engage her coworker to make it happen. And as she felt her son's thighs press against the small of her back, she knew he would remember this as the moment that if he put effort into something, he would get what he was trying to achieve.

Emi felt Ichiro rubbing the head of his cock around her sensitive opening, relaxing the muscles but also gathering up the combined lubricant of both her and Fumiko that had accumulated there. She had the sudden, naughty realization that her son was using her own fluids against her, and it caused a brief flash of perverse excitement to course through her. Even if she had conceptually wanted to stop him, her own body betrayed her.

The perverse excitement was replaced a moment later by an intense stretching feeling that initially caused her a strange feeling of pain, but it was a different kind of pain than she’d felt before. Something about this pain was intensely erotic, something that she’d never felt before in her life. Her son was truly doing something that she’d never done with any man ever before, and therefore he would own that part of her forever.

Emi felt as nerves she’d never felt before awakened inside of her as Ichiro pushed himself deeper than any man she’d ever felt before. If she’d been uncomfortable before, these nerves changed that moment, and as she felt her body tightly squeezing on his cock, she wanted nothing more than for him to continue awakening things inside her she’d never felt before. She wanted him to push her levels of desire that she didn’t know she had, and her son obliged as he continued to push himself inside her.

Emi's moans were muffled by Fumiko's pussy, still in her face, but she knew that her coworker felt the vibrations. Fumiko responded by making small circles on Emi's clit with her hand, causing another wave of pleasure to join the new, exciting feeling she had deep in her guts. She knew that if Fumiko continued to pleasure her while Ichiro fucked her ass, she would cum quickly.

Emi felt Ichiro begin to move, slowly at first, causing his cock to slip in and out of her tight asshole. Remembering something she'd read a long time ago, she clenched her interior muscles, clamping down on him as tightly as she could. As she clamped down, she knew he was surprised and impressed with her. She was going to milk all the cum from his cock, letting him shoot his load deep inside her guts, and she knew that Fumiko would praise her for it. And she wanted that praise, the praise from her coworker that she was being a good girl and the praise from her son that she had been his very good slut. She wanted nothing more than to hear them both praising her for opening her body to the most taboo thing she could.

She felt her ass ripple as he slammed into her, and she enjoyed the feeling of him taking her entirely. Her body was entirely his. She felt the urge to really drive him into her ask, forcing him to destroy her ass for all other men, because she knew that would truly prove his dominance, but she also knew he wouldn't hear it. Not with Fumiko on her face.

Instead, she moaned with the deepest pleasure as he continued to find her pleasure spots. Her heart began racing and her blood pumped. She felt a tingling that ran up her spine and deep into her stomach, a feeling that she'd never felt before in her life. This moment was the most intense sexual feeling she'd ever had, and she knew, deep in her mind, that it was the same for him.

“Mother," Ichiro said, "I’m going to go faster now."

"Good boy," Fumiko purred.

He began to thrust faster, making sure to distinguish between faster and harder. She relished in the idea that he would spend months telling his friends about how he'd fucked his mother's ass and she wanted him to have those bragging rights. She began to squeeze and release her opening in response. He clearly enjoyed what she was doing because a moment later, she felt him place his hands against the small of he back and really started to drive his cock home. She moaned excitedly as he began pumping as fast as he could into her ask, using her body for his pleasure. Relaxing her muscles, she became as pliable as possible to him command and moaned deeply as he thrust his cock into her again and again.

"Mother!" she heard him exclaim suddenly.

She felt her ass tighten against him as an orgasm suddenly rolled through her whole body, clearly driven by her son calling out for her. It was deeper than any orgasm than she’d felt before, stemming from some point in her body that she was unaware even existed. Something about the way he was fucking her touched some part of her that had never been touched before, and her son continued as if was not going to stop until he was done with her. That thought drove her more into the orgasm, feeling it roll up her spine, into her neck and across the top of her head. Her whole skin felt electric, rebounded by the feel of Fumiko's hand making faster circles on her clit.

Emi bucked hard and moaned into Fumiko's pussy. She was cumming hard, but neither her son nor her coworker were going to let her free while it happened.