Nick sighed as he stared at the textbook spread open on his lap. He had been trying to focus on his homework for the past hour, but his mind kept wandering. He glanced at the clock on the wall and groaned. Only an hour until his parents got home and he was off the hook for babysitting duty.
Just as he was about to lose himself in another daydream, the living room door creaked open and in walked Kaylee, his ten-year-old sister. She skipped into the room, her pigtails bouncing with every step.
"Hey Nicky, whatcha doing?" she asked, her voice dripping with innocence.
Nick rolled his eyes and tried to ignore her as he adjusted his glasses. "Homework, Kaylee. You know, the thing you're supposed to be doing right now?"
Kaylee stuck her tongue out at him and twirled around, showing off her new dress. Nick couldn't help but notice the way it hugged her developing figure. He quickly looked away, feeling a mix of guilt and confusion.
Kaylee caught his gaze and smirked, puffing her chest out. "Like what you see, Nicky?" she asked, batting her eyelashes.
Nick blushed and stuttered, trying to come up with a response. "N-no, Kaylee. That's not...I mean, you're my sister. That's not okay."
Kaylee giggled and sat down next to him on the couch, challenging him to a game of truth or dare. Nick, still embarrassed, agreed, hoping to avoid any awkward questions.
Kaylee grinned mischievously and didn't hesitate before daring Nick to put his "thingy" between her "boobies" and cum on her. Nick was shocked and tried to protest, but Kaylee's innocent act and playful insults made it hard for him to say no.
"Come on Nicky, I dare you. Chicken?" she teased.
Nick sighed and gave in, carefully placing his penis between Kaylee's breasts. He felt a strange mix of guilt and pleasure as he began to thrust, trying to get it over with as quickly as possible.
Kaylee giggled and encouraged him, teasing him about his size. "Is that all you got, Nicky? I thought you were supposed to be a big boy now."
Nick's face turned red and he tried to ignore her as he picked up his pace, quickly reaching his climax. He cum on Kaylee's chest and she looked down at it with curiosity.
"Ew, what's that?" she asked.
Nick was mortified, but Kaylee seemed satisfied and asked if they could do it again sometime. Nick, still in shock, agreed, knowing that this secret would bond them together forever.
As Kaylee skipped off to take a shower, Nick couldn't help but wonder what he had just gotten himself into. He knew it was wrong, but there was something about Kaylee that made it hard for him to say no. He shook his head and tried to focus on his homework, knowing that he would have to come up with a plan to keep this secret hidden from their parents.
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