Looking around, you see a little girl approaching you. She looked no more than 10 years old, and wore a very skimpy bikini top and bottom. Her legs were covered in shorts that hugged her perky ass, and her feet were bare. She looks at you, smiling with her black hair pulled into a ponytail. You look at her confused, then notice her eyes shifting to your erect cock.
"What do you want, little girl?" You ask her.
"Umm..." she gulps and starts talking very fast. "Can I touch it? Please?"
"Um, erm...sure." You say nervously. "But why?"
"Because everyone else is doing it, and I want to as well." She says and takes your cock in her hand, stroking it slowly as she stares at you with her puppy dog eyes.
"I shouldn't be letting a little girl touch my dick like that." You said to her, but remembered that sex was very casual in this world now. There was no rape, because everyone consented. You wouldn't want to get people weirded out by your behavior if you denied their advances. "Suck it. Put your mouth on it."
She nods and begins sucking your cock, slurping your shaft with her tongue and licking the tip of your cock. After a minute, you feel yourself about to cum, and quickly pull your cock out of her mouth.
"Sorry, I don't know how long I can keep this up." You told her.
"Please, I love your penis." She whines and begins stroking you again. "You can cum in my mouth if you want, or inside my pussy. Lots of guys like cumming in that."
"If I cum in your pussy, would you get pregnant?" You asked her.
"No, because I'm already in heat and I've never had sex before." She replied.
"Maybe, and if I do I don't care." She flatly said, and your arousal skyrockets. But for now, a simple blowjob will be good.
She sucks you in once more and begins stroking you faster. Your cock grows rapidly in her hands and soon you feel the warm tingling sensation begin to fill your body. You thrust your hips upwards to help force your cock down her throat. Your balls begin to tighten and you try to hold off as long as possible until you can feel your orgasm rising from deep within you.
"I'm gonna cum!" You shout.
"Cum in my mouth please, mister." She whimpers and keeps jerking your cock, trying to force you over the edge.
Soon you begin to spurt your seed into her mouth, filling her cheeks with your thick white goo. It was the most intense feeling you'd ever experienced, and you moan loudly in pleasure as you climax. When you finally finish, she licks up every drop of cum and swallows it, moaning in delight as she cleans your cock with her lips. "Thank you for the cum, mister!"
"Thank you as well, kid." You shudder, looking around to see everyone else in the lobby of the apartment building going about their day as if what you just did was completely normal. This world was indeed completely casual with anything sexual, not even the children were excluded from it. "What's your name?"
"Amber." She replies after licking her lips. "Do you want to hangout with me, mister?"
You thought about her question for a short moment, wondering if you want to spend more time with this little girl to see what scenarios you two can get involved in, or leave to find something new.