My little sister had me in her room naked on her bed and also I was tied up and she wasn't so I was trying to escape. I also screamed for help because I didn't think of her this way
Y/n:"BLAKE! RUBY! Anyone help me!"
Yang:" They can't hear you big brother~"
Y/n:" Yang this is crazy. Your Crazy!"
Yang:" No~ I'm just crazy in love with you~ I was in love with you ever Sense I was a kid~"
Y/n:" Dad wouldn't approve...!"
Yang: It doesn't matter~ Dad is dead~ Ruby is dead~ Blake is dead~ basically everyone in the school is dead~ it's just me and you Big brother~"
Y/n:" You killed everyone!.....even my girlfriend....velvet..."
Yang:" She got the worst of it~ I slowly cut her open~ then I punched her head off~"
She sat on my member as went right into tight opening and she slowly started bouncing her hips which made me and yang both moan in pleasure.
Y/n:" Yang....I don't want to do this....
Yang:"C-come on ahhh~ ohhh~ yess~ you enjoy it"
Y/n:" i-i don't! This is wrong...!"
She started making her self bounce faster and harder as my member was becoming more harder each time she went up and down it. She the climaxed on my member and I smiled because I thought it was over. But it wasn't
Yang: ahhh~ we are not ahh~ done yet until I c*m 3 more times."
She made her self move even faster then any human could which made me climax inside of her filling her up to the womb.
Yang:"s-so w-warm~"
She didn't stop though as she kept in riding me until we both Climaxed at the same time with our faces in full ecstasy. Then she laid beside me as the bed was getting wet from both of our c*m spilling into it with a smile she kissed me and went to sleep so I had cut the rope. Which aided my escape
Y/n:"......your crazy sis...."
Yang:" Didn't mom always say to never abandoned family~"
Y/n:" Your don't have a mom.."
Yang:" neither do you~ I killed her before I f*cked you~ Now that I had your c*m inside me~ I'll be pregnant and we'll be a perfect father and mother to our children~"
Y/n:" I'll still leave you, no matter what"
Yang Shot my leg which made me fall down onto my stomach and she slowly walked towards me still nude and she slowly sat on my face which made me blush more
Yang:" Be a good brother and Eat me~"
You were forever trapped with your Robot armed sister, and you guys ended up having Twins with each other, and they already seemed to have found that same senpai, I wonder how that's gonna work?
