All characters are 18+
Chapter 1
It happened when I was 18. All our family went to the country every summer. They are mom, dad, my sister Natty and I. Our relatives sometimes came to our place and were there for some weeks. This summer we waited for our Aunt Galya's arrival. After a week of our staying at the cottage she arrived with my cousin Sveta. Natty and Sveta were 18 like me. They were good company and we spent time together.
One day the parents came up to me and said, "Sonny, as you know we're going to a wedding party and staying there for 3 days! Since you are the eldest of your young company, Sveta and Natty, you'll be the Big Boss. Can you stand it or not?"
"Wow! Of course," I jumped for joy.
I couldn't believe there would be 3 days of freedom with two beautiful girls at my hand.
"Of course, he's the elder," my mother agreed. "But it doesn't mean he can be the boss and protector of our cottage! You do know how he likes throwing parties with a pile of glasses full of strong drinks!"
My mum kept on arguing, but father got the point.
"Look here! I know what I'm doing: they are already too grown-up to be guarded and nothing will happen in this quiet place!"
His words apparently reassured her anxiety and she agreed with her husband. Not much time was left before their departure and my dad went to prepare the baths for us. It didn't take too many trips and when he emerged from there he told us in his fatherly tone, grinning, "You should take a bath in the evenings!"
We all laughed out loud in a friendly way and Sveta, Natty and I rushed to the forest for strawberries. We didn't get in our parents' way as they were gathering their stuff to leave. That day the forest was sun-lit and it was a really great day from dawn to dust. Delighted I started planning all upcoming three days. By the time we returned our parents were ready to drive away.
In the usual parental way they embraced us and said good-bye to us, got in the car and aunt Galya, my mother and father drove away. As soon as the car disappeared the sky got overcast.
"Guys, I think we should take a bath before it rains!" Sveta exclaimed.
After saying that, the girls ran in there so they would be the first to do that. I had to wait for them to finish. So I sat on the front steps and grabbed my favorite book to read on the bench as they were having a bath. I was constantly hearing them splash and laugh, but after some time I noticed it was quiet and I got worried. Perhaps something had happened! I decided to go to check. I lay my book down on the bench and got up. Entering the bath I tensed my ears. It was absolutely quiet. I opened the door and shouted, afraid of seeing their naked bodies or even worse things, "Are you all right?"
There was silence in the bath and I got seriously worried. I opened the door wider, stepped in and... screamed!
"Fuuuuucking shit! Fuck you girls!"
I was doused with cold water and I slipped and fell down, as there was a loud laughter from my playful sisters behind the door. They had tricked me, the boss of the home.
Swearing I got back up: my T-shirt that showed my every muscle and wide jeans were wet through. I heard, "You had to take a bath, too!"
There was another laugh. It was Sveta's voice. Of course, who could make such shit up not her?
"Hey, don't be mad!" she cooed. "It'd be better if you help us."
I was shocked and thought I was dreaming.
"What is taking you so long?" It came from inside.
I opened the door. The girls lay there naked on their stomachs with their asses on full display.
"Come in, come in. We won't bite you!" Sveta said and turned her head to me.
I felt my prick harden up. Yeah, what a sight it was! Two absolutely naked girls lay in front of me. Two asses, Sveta's ass was more round and fatter, Natty's was thinner. Sveta brought me back into reality again, "Haven't you seen naked girls before?"
"Nah!" I replied like a fool.
Sveta laughed and Natty giggled. "Mother and I went to a nude beach last year. So don't be confused. All the same!" Sveta said in a proud voice.
I got a wet brush and started doing their naked backs and asses.
"Are you gonna stay in your wet jeans?" Sveta giggled again.
"Stop that!" I replied roughly.
"Okay, okay. We are through. Turn around."
I turned around and heard the cousins jump up to their feet and start splashing in the water to wash away the soap suds and sweat. The door opened and Sveta said, "Okay, you can turn around."
I turned around and saw Sveta was still there. I noticed her splendid tits and a dark triangle between the legs. I thought she stayed there especially to show herself to me. Then she got out and closed the door. I started undressing.
My clothes were soaking wet so I didn't need to take them to the special tank for clothes and I threw them on the wooden floor. I soaped myself swiftly and rinsed off. The naked girls stuck in my mind. Thus I had a hard-on. I sat, took my already swollen cock in my fist and started stroking it up and down, thinking about the nice asses I had just seen.
I was brought back into reality by Natty's scream, "What are you doing in there? It's gonna rain!"
"Fuck, she has fucked it up!" I thought. "I'll never get to sleep tonight!" I went to dress. It was good that mother got my clothes ready and laid them on a bench.
When I left the baths, the rain was drizzling on the ground. I ran to the house. The girls had already laid the table. It became dark behind the windows and there was heavy rain. We sat at table to have a tea in the darkness.
"Did you really never see naked girls?" all of a sudden Sveta asked again.
"No, I didn't, except in pictures," I said honestly. "Why are you asking?"
"I noticed a tent in your jeans!" giggling she said. "Okay, don't be mad at me. Let's play cards!"
"What's the prize?" Natty interrupted.
"Undressing!" Sveta said and looked up, running her tongue along her lower lip vulgarly. "C'mon!"
"Do you mean to undress absolutely?" Natty got scared.
"Yep, are you afraid of losing?" Sveta played her off.
"Nope!" the shy sister replied.
"Okay, then bring the cards," it was clear that Sveta was horny at that moment.
Natty got up to bring them and fetched the cards. So our game had started. Of course, we played foolishly. I was unlucky. I had on only jeans and boxers soon. Natty was unlucky, too. She had on a summer dress and decided to take off underwear at first, hoping she'd be lucky and stay dressed. Sveta felt good like a winner.
When I was unlucky again I lost the jeans. I took them off to the girls' applause and stayed in my boxers only.
"What's next?" I asked Sveta.
"I don't know now!" merrily she answered.
I lost the boxers in 10 minutes. I slowly got up.
"C'mon, hunk!" Sveta cheered me on. "You did see us naked today!"