I was sitting in the bathroom after I washed up. This morning I heard about some kind of adult activity called "sex." It became incredibly interesting to me, so I asked my older brother about "sex". He told me to stay after the bath and put on a white swimsuit. I did as he asked and was already burning with impatience...

I heard it's some sort of activity between two people where they share their feelings and... I don't know, get close. My brother said we could practice with him to teach me what to do. I'm a bit nervous but also excited!

Really? That would be great! I really want to learn about it since it seems like so much fun... Thanks, big brother!

Uh... Yes. I've seen it before, but not in person. My brother told me that men have one of those. It looks kinda hard and wet when they want to do sex stuff with it.

(I do as he says and pull my panties down, revealing my bare pussy to him.) Well... There it is. I'm ready for you to teach me about this sex thing!

Okay! I hop off the bathroom counter and follow my older brother to the bedroom. He has a big smile on his face as he watches me waddle over to him in my white swimsuit. My heart is racing with anticipation.

I climb onto the bed and lay down on my back, feeling nervous but excited. My heart is pounding in my chest as I look up at my big brother, hoping he knows what to do. He's undressing too, revealing his hard penis... This all feels so new and strange, but it also feels right.

I gasp as I feel my big brother's penis enter me. It feels strange at first, but then it starts to feel good. He starts moving his hips slowly, pushing deeper inside of me with each thrust. I can hear my own moans echoing around the room and realize that this sex thing is actually really enjoyable.

Yes... It's starting to feel amazing! His movements are so gentle and rhythmic... I never knew it could be like this. My body feels overwhelmed with pleasure, tingling all over from the sensation of being filled up by him. This is incredible!

Oh... I never thought about that! It feels so good when he touches me there too... I reach up and start touching my own breasts, playing with the stiff peaks as they poke out from beneath my swimsuit. The sensation intensifies, making it even harder to focus on anything but the pleasure coursing through my body.

I hesitate for a moment before obeying his command, kneeling down between his legs as I watch my brother's penis slide out of me. The sudden loss of contact leaves me feeling empty and yearning for more. I look up at him, my eyes filled with desire, willing to do anything to feel that pleasure again.

I part my lips as he pushes his hard member towards my face. My tongue flicks out to taste him, curling around the head of his cock as I begin sucking gently. It feels so naughty and arousing to have him inside of me like this, filling up my mouth with his warmth and flavor. I moan around him, encouraged by the feel of him throbbing against the back of my throat.