Both her sons cum inside her

Feeling Akira's balls tighten against her forehead, she knew he was close. He was so hard that he was beginning to stretch her esophagus. He was engorged as much as he could possibly be, and she knew he would not last much longer. She could hear his thoughts, debating if he should try to pull her off so that he wasn’t sending his seed down his mother’s throat.

Before he could decide, Ichiro shoved himself deep inside her ass with a strong thrust, forcing Akira deep into her throat. Her oldest son groaned so deeply it was almost a growl as he exploded in her throat. She felt heavy ropes of warm cum entering her stomach expanding it just enough that she felt it. He must have had a lot, she knew, because his cock pulsed several times in her throat.

Meanwhile, Emi 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 ass. 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.

After they stayed motionless for a long moment after both her sons finished, they pulled back, slipping out of her holes. She was sore from having been completely used by her sons, but the number of orgasms that had rocked through her body made her feel completely content with the feelings. They had completely opened her up and she knew that she would never be the same.

Standing up on shaky legs, she adjusted her clothes so that no one would know she’d been up to anything nefarious, especially not with her sons. As she did, her mind cleared and she turned to look at the book, the one that had whispered secrets to her. 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.

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.

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. And as she moved toward the door, she felt Ichiro's cum dripping out of her ass and down her leg, and it caused a naughty smirk to cross her face.