I'm a hikikomori who can't leave the house, but I have sexual desires, so I keep making my sister give me a blowjob. My sister, who is afraid of me and can't resist, keeps giving me blowjobs every day, and it seems she secretly enjoyed it, as her love juices overflowed to the point of leaving stains on the sheets! When she was pointed out the embarrassing stain and was in a panic, I touched her body... and it felt great! When I forcefully inserted my penis, she reluctantly came over and over again, so I kept cumming inside her many times!
