So our parents happened to have something planned yesterday evening and everything went well. I mean quite literally, I planned to have a chill night by myself, light some candles, have a nice long bath and masturbate with my new toy I've got from my friend at work. Well, little did I know my evening was going to happen a bit differently.

My brother was home (18M) and playing some stupid game on his laptop. I completely forgot about his existance as I really wanted to have this night for myself, I was focusing on how I could relax mentally and physically. I got in the bath and started playing with myself. My new toy looks like a small dildo, but it's actually more like a girthy, finger looking thing with rough bits on it that feels great.

Once I got wet enough in any sense that mattered, I heard a knock on the door. I genuinely thought my dad wanted to come in because they left something at home or something, it was quite scarry. Before I could say something the door opened and it was my brother.

We already experienced stuff together - but this was different. He looked stressed. I asked him whats wrong and he said: my team mates dared me to come in here and now he is on call with them.

I said hi, whoever you guys are so he would leave.

He didnt. He sat down on the edge of the bathtub and asked me if he can look under the bubbles. I said right, here we go again. Sure.

He lifted the bubbles up and looked at the thing that was already inserted in my pussy. He grabbed it and started moving it in and out slowly. Honestly it was so hot that it just turned me on even more.

I unzipped his pants and reached for his dick and placed it in my mouth. He looked so cute I could not resist. He said he wanted to get in with me and since it's quite of a big tub I said sure. I gave him a hug from behind and started jerking him from behind with my feet and hands. What happened after is just insane.

I've already experienced outer-body experiences, but this was completely surreal.

He said it's enough. Grabbed me by the waist and placed my ass on his laps. Well, he technically just slid in as if there was no tomorrow.

All my little brother needed was 5 seconds and he came inside me. It made me cum so hard that nobody or nothing has made me feel that way before. I could feel his warm cum fill my insides and could not stop shaking.

I feel so proud for being such a big sister for him and relieve his stress when he needs me.