Mi cuñada

One afternoon at the beginning of a school course in university, I was with my wife at my in-laws' house and my sister-in-law said she would soon start her new course. It's worth saying that she is a very pretty girl, named Karina, 21 years old (I'm 31), 1.67 meters tall, white skin, beautiful hair, a slender waist, small but perky breasts, and a very tasty bum, dresses well and sometimes shows off her beautiful bum with tight clothes.

It turned out that the start of her course schedule would coincide with my business hours to open up and some days the closing would be at the time of her departure. So when she started telling us about it, I offered to pass by her since the university was on my way. At first, I didn't do it with any intention, but after getting used to seeing her, I started looking at her differently.

The first few weeks we talked little, but over time we had many conversations. Karina told me about her school courses, friends and girlfriends, and what really caught my attention was all the exercise she did and how her body hurt. We started having more confidence.

One day I went to her house and heard that Karina was taking a bath. Imagine how it would be to see her, but I didn't rush so I took advantage and went up to her room. I got excited knowing that she would wear that tight clothes underneath. I opened her drawer and saw all her panties and bras, her underwear. I didn't see any lingerie sets and since I knew her, I assumed she was still innocent about sex things.

When she came out, I was sitting very seriously in the living room.

Karina: Hi Beto (no longer calling me brother-in-law, but by my name), it's getting late, do you wait a bit? (she appeared with a towel)

Me: Of course, with great pleasure. Are you still feeling sore from yesterday?

Karina: Yes, a little. I think I won't exercise today.

I asked her again if she would exercise when we left, and she said: No, I don't think so.

Me: A good massage will get you back on track. Do you believe?
Karina: The problem is who's giving it to me haha (she laughed)
In the afternoon I was supposed to pass by her place. When she got in the car we started talking about everything, when we arrived, I noticed there was no one at her house, then I said: Do you still want that massage? Karina blushed. And she said: Well, it doesn't sound bad. Do you want to come in?
We went inside and she went to change, which surprised me. She came back wearing a halter top and a short skirt. I was sitting on an individual armchair and she lay down facing away from me, which left her round and beautiful bum in a better view for me. I started remembering that I had seen her underwear and although I didn't know what she was wearing, I imagined it, it happened so fast. Karina said: If you're going to give me that promised massage, brother-in-law?
I got up quickly and approached her. She lay down facing away from me and I started massaging her. It wasn't a stress-relieving massage so I didn't spend much time on her neck, I spent some time on her back giving her a tasty massage, then I saw her legs and started from the ankles, slowly going up to her thighs and slowly going up, when I was about to reach her bum I stopped, skipped it and went back to her back. Karina smiled. I kept massaging her back, then suddenly she lowered her halter top and bra and said: Unhook my bra and lower my blouse so you can massage my back well. I obeyed, although I had a desire to see her breasts I contained myself and only gave her a massage on her back. I went back to her thighs and was about to finish when, without lifting up, she said: You know what? I exercise my abdomen, legs and... (she made a pause) glutes.
I was left speechless. I never thought she would ask me that. But I started massaging it, slowly wanting to take advantage of the time and it felt delicious. It took several minutes just massaging her bum, I thought I should finish but did. Karina adjusted her blouse and bra and went to her bedroom. I went to the kitchen to be alone, to relax my excitement that was already noticeable. I was at... point of leaving without saying goodbye when I arrive and grab my buttocks.

Karina: Well, I think you owe me several of these.

I was surprised too much and said: I think so. Do you want to freeze the debt?

Karina: Let it remain open. You can increase it, although I doubt you'll be able to pay it off soon.

In the days and weeks that followed, many times I let her touch my bum, gradually the mutual touches became more common but discreet. We had started by touching each other's ass, but gradually she gave me more openness to caress her. In four weeks, the touches were so allowed that she started coming to my business daily, I would close, we would kiss and she would touch me whatever she wanted and let herself be touched all over, but always above the clothes.

One day, almost seven weeks after the massage, we arrived at her house and saw no one. Karina sent some messages, didn't tell me anything, and suddenly received something. Then she said: Do you want to come in? Nobody will arrive until 10 (it was 6).

We hadn't had that opportunity since the massage, but this time she had made sure of the time we had. We entered and she started kissing me, soon started touching me like we did at the business. I responded with the same. Suddenly she stopped and said: I thought we'd never have this time and I want to take advantage of it. Are you waiting for a moment? I just nodded.

She went to her bedroom, I didn't know what she had planned or even if she was a virgin or had already had some sexual experience. I waited in the living room when suddenly she arrived. She was wearing a bra and a very short skirt (almost the same clothes from the day of the massage). When she arrived, I said: Do you want another massage?

Karina: How did you guess?

Me: Well... it shows.

Karina: (lying down) But this time you can touch and see what you want, brother-in-law.

I was surprised, it was my opportunity to touch her however I wanted and in my mind passed, to take her. I started massaging her and didn't hesitate... irla desnudando poco a poco, she was letting me take off the little clothes she had on, first I took off her blouse and bra. She was massaging me and suddenly wanted me to touch her tits, but I restrained myself, massaged her legs instead, and when I touched her bum, she got up and took off her short. What was my surprise that she was wearing a tiny thong that I hadn't seen in her drawer before.

Me: How beautiful thong are you wearing...

Karina: Do you like it? It's new, I bought it for when you would give me this massage.

I got up and covered her tits with one arm, and with the other I threw myself onto the couch. She climbed on top of me and started kissing me. Suddenly her hands weren't on her tits anymore but were touching me and starting to undress me. It was at that moment that she got up and let me see her tits, her nipples were standing up, didn't hesitate and started kissing and sucking them. She made small moans. My hands were running all over her bare torso, touching her tits and caressing her ass. She only had the new thong on.

Karina took off some of my clothes while we were kissing and touching, rubbing her cock against my bum with her hands, but didn't take off my pants. Then she stopped and said: Can I tell you something?

Me: Of course, with confidence.

Karina: Well, I've had boyfriends before, but never got this far with anyone. Do you know what I mean?

Me: Yes, I think so. Are you a virgin then?

Karina: Yes, but I don't want to let this opportunity pass.

She started kissing me and slowly reclining on the couch. I took off my pants and was left in boxers. I kept kissing her and slowly started going down, when finally I reached her pussy, I took off her thong and started licking it, moving my tongue all around, it was semidepilated and very wet. I licked it for a long time, moving her clitoris from side to side while she just rolled around on the sofa. She was moaning loudly, I kept sucking her juices and playing with her clitoris, she liked what I was doing. and I would open my legs more so she could suck it well. Suddenly she came, got very wet and reclined a bit.

Karina: I'm very excited. I've never felt this excited before.

Me: Don't tell me you don't touch your pussy, Karina.

Karina: I do touch it but it's gotten me so wet and excited like crazy because you sucked it.

Me: Do you want to try?

Karina: Yes (laughing a little with fear)

I stood up and was about to take off my boxer briefs when she stopped me and started doing it herself. I took off the boxer briefs and my cock was in front of her face, her face was one of surprise and she started touching my cock, caressing it like we used to touch each other in business, that way for a while until suddenly she says: Do you need me to suck it?

Me: If you want, it's not an obligation

Karina: I want but I'm not sure if I'll like it. Have...

I started giving her kisses on my cock, standing in front of her. I kissed it all over, turning the cock with kisses but without tongue, when suddenly she gave a kiss to the tip, I felt like I was about to come. She started touching my tits and she began to lick my cock, slowly pulling it out more and running her tongue along the cock. That excited me a lot.

Me: Have you done this before, Karina?

Karina (with my cock in her mouth): No brother-in-law, you're giving me a debut with pussy sucking, cock sucking... and are you going to deflower me?

She kept passing her tongue over my cock and then gave another kiss to the tip, opened her mouth and took it in a little, passed her tongue and opened her mouth again and this time took my cock deeper into her mouth, that way little by little until she almost had it completely in her mouth, taking it in and out slowly and I was about to come with semen in her mouth but knew I still had to deflower her. I was holding back the coming and Karina wasn't stopping from taking my cock in and out of her mouth. I took her head and made her suck my cock completely, then pulled my cock out of her mouth. And I said: Do you like it?

Karina: I love it, I hope you let me do it many times.

I opened her legs, put my cock near her pussy and said: Are you ready to be mine, sister in law?

She bit her lips and nodded. I got closer slowly and passed my cock over her wet pussy. She was nervous. I put my cock at the entrance of her virgin pussy and started pushing slowly.

Karina: Mmm it hurts a little, do it slower.

I'll do that, sister in law.

I took out what I had put in and started again. I put her short under the couch to not stain it. And kept putting it in slowly. Every time I pushed my cock deeper into her pussy. She moaned and many times told me it hurt a little but to keep going. Push and push, slower so she could enjoy it soon. Then I took almost all of my cock out and now if I did it harder. My cock was all the way in and Karina let out a small scream.

Karina: Ahhh. Have you put it all in me?

I: Yes, sister in law, it's all inside.

I left my cock inside for a while, moving slowly forward and backward, got closer and started sucking her nipples. My cock was still inside trying to get her used to it. Her face was sometimes painful and sometimes pleasurable. Slowly I started pumping until we were really getting into it. Karina no longer felt pain and wanted more and more, she said: Yes, that's tasty... mmmm.... aaaaa...

We stopped, I told her to turn over, put her in 4 and put my cock inside her pussy again. That position let me grab her beautiful ass, held her there while I was having sex with her every time harder. I had already desvirginated her but seeing her bum in front of me made me want to penetrate it too. I controlled myself knowing that wasn't what she wanted that day. That position made her feel my cock deeper, she was moaning a lot and asking me not to stop. She was about to come, then I said: Where do you want me to come?

Karina: Inside of me I want to feel everything
Don't hesitate for even a second. Keep going down on me, she was moaning and I was penetrating her as much as I could without moving much. It was my turn and I came inside her, it was a very abundant orgasm. I left my cock inside her and slowly pulled out. She was sweaty and satisfied, we both were.
Karina: That was delicious. I don't know how I didn't let you come earlier.
Yo: Well now just ask your sister in law.
We got up, went to clean ourselves. She went to take a bath and I cleaned up watching her naked. I couldn't believe that my sister in law was now mine, that I had fucked her and what lay ahead.
It was late. I rushed to leave. We said goodbye with a good kiss, she still naked and me touching all of her body.
Karina: I think your debt increased Beto. But we're going to have a lot of fun from now on.
Yo: I already believe it, so I'll keep increasing it. I'll see you tomorrow.