Smiling, she slipped through the door and quietly closed it firmly behind her. Then she tip-toed over to his bed and carefully slipped between the sheets with him, snuggling up close to his warm little body.

He was facing away from her, and she pressed her tiny breasts and hips firmly against him, savoring the feel of his soft warmth and delightful, boyish scent.

This lasted only a moment before Kyle stirred and mumbled, "Mmm, I thought you changed your mind."

"No way, but I thought Mom and Dad were going to stay up all night!" Melanie whispered in his ear.

Kyle rolled over to face her and they hugged, fiercely pulling their bodies together until they could feel the heat of each other's sex through the soft material of their nightshirts. Neither of them was wearing anything underneath. As was typical for girls and boys their age, Melanie had grown to nearly the same height as her brother, and their bodies fit together perfectly.

The girl giggled as she felt Kyle's penis quickly stiffen to its full three inches and align itself perfectly with the cleft of her vagina.

"Mmm, I love how that happens," Melanie softly whispered in his ear.

"I love how you make it happen," Kyle replied just as softly, giving his hips a bump against hers for emphasis. Both children gasped at the jolt of pleasure it sent through their young bodies.

Kyle felt his heart begin to hammer in his chest as he sniffed his sister's fragrant hair and caressed her back. His lips found hers and briefly brushed against them before locking onto them more firmly. Soon, both children were writhing against each other as their tongues danced and whirled in the other's warm, wet mouth.

Gasping for breath, the children grasped and clawed at each other's backs as they licked and sucked at the other's mouth. In moments, each child had pulled the other's nightshirt upward enough to feel their furiously aroused, immature sex organs crush exquisitely together.

As their excitement reached a fevered pitch, the broke off their kissing to gulp down enough oxygen to feed their tremendously aroused little bodies. Kyle tensed with pleasure as he slowly thrust his sweet, slender erection up the length of his sister's tight vaginal crevice. She gasped lustfully as she felt his velvety hardness scrape upward along her turgid, throbbing love nubbin to send burning, searing ecstasy through her sex-crazed young mind. Suddenly, they gasped in unison as the boy's cool, hairless, golf ball-sized scrotum kissed the soft, sensitive petals that marked the entrance to his sister's loins. A droplet of her feminine dew wet him before he began to rub downward again, thankfully pulling her prepuce down over her burning little clitty. She felt it might have burst into flames, otherwise.

By the time Kyle felt the circumcised head of his immature penis become wet with his sister's nectar, he was already so aroused that he just wanted to bury himself inside of her tight little hole and cum like crazy......(cont)