My naked sister turned into a whore (story 1)

I'm 23 years old, I have two sisters. One of them Katia has just separated from her husband and moved back to my house with me and my mother. It was hard not to notice how much she had grown up differently than before the wedding. I'm not going to watch her especially when she started dating Eduardo, a little guy who had a bad reputation in the village because they said he was involved with drug trafficking. The fact is that every hottest girl in town has already been on his stick and now it's my sister's turn. When she turned 25 Eduardo threw a party for her, and of course I went to it. She was wearing very tight trousers that divided her butt with minimal panties all socked up , wore a blouse that showed more hiding her delicious breasts, the party rolled lively everyone drank and danced, at one point So, out of curiosity I started following them even though they were far away. They went towards a forest in an area that was quite distant and took some time to get behind it but when I got close enough where they were... He was a lot older than her. I think he must have been about 46. They stood there getting wildly fucked and I punched watching my sister's whore being fucked, then the guy made fun of her inside screaming, she immediately lifted up her pants with some difficulty because it was too tight. The guy took out his cell phone and made a call , something strange was going on Edward's face was full of shit. She wanted to swallow it, but he didn't like the way she looked at him so much that his bodyguard threw her ass out and made fun of her too. The security guard said no. But something even more exciting was about to happen, because Edward had ordered that she go like this for the bathroom. The problem is that the toilet would be there in the hall and everyone would see her totally fucked up. She still tried to argue but was immediately reprimanded. She walks out slowly with her head down, when she's once again called to attention by Edward who orders her to stand up straight and walk around in a provocative manner so he can show the whore that she is. so without any other alternative was what she did, left rolling her delicious tail and smiling with one eye half closed because the fuck was so much that it was closing his eye when he entered the hall everyone looked at her and soon deduced what all this gum on her face was, she smiled and passed her tongue to her lips, Eduardo followed close by, I was near the toilet and made a question as she saw me, gave a slight smile for her who returned another smile. in next story i will talk about how I managed to eat that wonderful ass