Ichiro cums as Akira watches

"Ichi-" she began.

Her youngest son grunted in reply.

She felt the walls of her vagina crush tightly against him as the orgasm rolled through her whole body. Her body went limp as everything gave over to the orgasm, but Ichiro did not stop. He leaned forward and as her orgasm continued, she felt his thick cock striking across her g-spot over and over again. Her son was not going to stop until he completely filled her, and 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.

Turning her head unconsciously toward her oldest son, she watched him smile appraisingly as her body jiggled and rocked in response to her youngest son's thrusts. As the orgasm continued to roll over her, she felt Ichiro's hand move to her neck, squeezing just enough to cut off some of her air. There was a brief moment of panic, but it was replaced by another feeling as she became lightheaded. Ichiro's hips continued to pump into her and she felt the world start to slip into gray. Just when she thought she was going to slip into unconsciousness, Ichiro's hand opened and everything that she was feeling rushed back into her with even more intensity that before.

"ICHI!" she screamed.

Uncontrollably, she felt liquids squirt out of her as she felt a deep sense of satisfaction. Her eyes rolled into her head and she collapsed onto the desk, giving herself fully over to her son. He was clearly an expert at sex, more so than even his brother, and let him control her.

"Wow," Akira said.

Turning her face toward her youngest son, she saw the wetness on his shirt. She felt a little embarrassed, but the look on his face told her that Ichiro had enjoyed it. He pumped his cock into her with more vigor, their lewd acts punctuated by the most intense wet sound she'd ever heard. She could feel how much he desired her and she knew that he would continue to make her his slut in the future.

Knowing this, she felt another orgasm growing. She dropped limply onto the desk, letting her youngest son manipulate her body in any way he desired. He lifted her slightly, ramming his cock deep inside her, and she let it happen, feeling a second and then a third orgasm wash over her like gentle waves. She couldn't explain what he was doing to her, but she felt herself completely relinquishing all control to him.

"Look at how much she gives in to it," Ichiro said to his brother.

"Yeah," Akira agreed. "She's definitely all ours now."

Emi's eyes rolled back into her head as her mind went blank as she felt herself disappear, leaving her body to be plunged and penetrated by her son. She could still hear their thoughts distantly, but in the separation from her body, she could still hear the words from the book coursing through her mind. She knew that this had been the ultimately goal of whomever had written the inscription, and she let the emptiness and pleasure wash over her.

With a final, solid thrust, Emi came back into her mind again as she felt Ichiro press his body hard against her. With a loud moan, he fell over her, his body fully covering her as she laid on the desk. She felt his cock pulsing inside her and felt the warmth of his cum flowing into her body. He moaned with each pulse as he released inside her, and she relished the feeling of knowing she'd pleased him better than any woman he'd ever been with.

As he finished, Ichiro let himself slip to the floor, his legs obviously weak from his orgasm. As he did, she slid off the desk to stand on her shaky legs. However, as she adjusted her clothes, her mind cleared. She turned to look at the book, the one that had whispered secrets to her, she found that it was still open to the title page, but the inscription and the symbol were gone. There was no writing in the cover and instead, she found herself looking at a regular, first edition copy of “Nami-ko” by Rouka Tokutomi.

“Mother?” Akira said, his voice confused.

"What did we just do?" Ichiro asked from the floor.

Turning to her sons, she looked at their faces. She had no explanation for them, and she could not hear their thoughts anymore. However, she could not deny what she had felt and how much about their inner desires that she had known. And she couldn’t deny that she had felt something for both of them for a long time. And the feeling of their cum dripping down her legs filled her with an inner contentment she'd never felt before.

As she encouraged them to get dressed, she knew that when they left the library and returned to the world, there would always be something different between the three of them.