Alright I know this sounds like I'm mentally I'll but hear me out.
It looked like she was in deep need of saving, she had a desperate look of pleading for help from all the shit she got herself into, so I saved her. I never realized how pretty she was until today. We went back home and she gave me this huge, smooth ass kiss on the cheeks and went to bed. I got horny as fuck and rubbed one out. The next day we both came back from school and I couldn't help but stare at her.
Then this guy starts flirting with her randomly calling her a fucking princess. Like, really dude? A princess? First of all that's my fucking sister right there, second that's so 1880s.
It didn't seem too bad though. The next day we're talking before we go to sleep and she kisses me on the cheeks. Now that's done it. She starts stripping, starting with her bra. Man her boobs were so soft, softest things I've ever touched. They're like balloons but instead rubber there's skin. I put a condom on and we started banging.
The next day, I felt like I had to tell her the truth. I told her everything; that Darth Vader's our father and I'm off to face him for the final time