Mari gently opened the door once more. Once again, her brother was sleeping peacefully. Mari smiled as she closed the door behind her and crept back towards Sunny.

He'd given no indication the next morning that he was aware of what had happened, so she felt fit to go for another round. This time, however, she had much fewer reservations about what she was doing and was ready to go all the way with him. Some part of her still knew she shouldn't be doing this, shouldn't even be thinking about it, but it was vastly overwhelmed by the rest of her horny brain.

Wearing only a thin nightgown without panties, Mari climbed onto her brother's bed and carefully pulled the blanket off his body. He wasn't hard like last time, but that wouldn't be hard to reach.

She immediately grabbed his pants and boxers and pulled them down off his lithe body. His limp penis looked adorable as it was, but she needed it hard to do what she was prepared to do.

She reached down and began to stroke the boy's cock, smiling as within a minute, his dick throbbed and began to harden once more. Mari smiled as she watched it slowly begin to grow.

It didn't take long for her gentle fingers to get it back to full mast, her horniness growing with every second as she became more and more anxious to do what she'd done here to do.

As his breathing changed with his growing arousal, she let out a breath as she climbed on top of him once more. As soon as she hiked up her gown and planted her ass on the boy's thighs, she trembled. He was so soft, especially against her bare ass.

She wiggled around a bit as she continued to play with his cock for a while longer. She was half-tempted to suck on it more, but that part was more fun when you could see the person reacting. She had something else in mind today.

She lifted herself and scooted forward, grabbing his dick and pressing his head against her entrance, which was already damp and ready. She gasped as she felt it. Her mind began to swirl as she thought about what she was doing. She hadn't even done this kind of thing with Hero yet.

She would be giving her first to her brother. And yet that didn't bother her.

She slowly lowered herself down to pull more of her brother's cock inside her, gasping at the pain that swallowed her. She knew it would pass, however, so she simply waited for it to do so.

Once she gave it a few moments, she lowered herself down further, paused, and moved down again. She let out a breath and moved down once more until his entire length was inside her. Sunny's brow furrowed, and Mari couldn't help but wonder what kind of dream he might be having.

She took another deep breath and lifted herself before slamming back down, the jolt of pleasure rocketing through her entire body as she felt his length inside her. She moved up and down again. The pleasure gradually began to increase as she began to speed up.

It was incredible, the feeling of her brother's cock filling her insides so fully. It was waves of pleasure throughout her entire body that made her want to moan so loudly she had to cover her mouth with her hand.

Her other hand slid up to her breast to grope it as she moved faster and faster, her brother's cock sliding in and out of her effortlessly, thanks to how wet she was. The idea of Sunny waking up and seeing her in such a taboo, lewd state only increased her arousal further, especially as small, adorable noises came from his lips.

She pinched her nipple and moaned loudly into her palm as she could feel that pressure building inside her again, and from the way he was twitching, his dick throbbing inside her, she guessed he was close too.

She moved as fast as she could, practically throwing her entire body against his as she was nearly screaming with pleasure. Sunny's body lifted, and then he groaned as he came. His sperm filling her to the brim was the final touch she needed to finish herself. She tilted her head back and moaned as she came all over her brother's pelvis, mixing with his cum as she rode it out, and waited to catch her breath. Sunny's face descended back into a peaceful sleep as she slowly lifted herself, dripping onto the bed and then the floor as she stumbled onto her. Staring at her brother momentarily, she felt a smile creep across her face.

As silent as a mouse, she crept to the kitchen and got some paper towels to first clean herself up, and then stalked back to Sunny's room to clean him up, before gently dressing him once more. The entire time, she felt light on her feet, her head clear and blissful, her smile never leaving.

And just like before, she kissed his cheek before going back to her room, closing the door gently behind her.

And when Sunny awoke a few hours later, his head was filled with dreams of something he should never have been thinking of.

As well as an idea that he also should've never had.