My sister said she would do anything if I got full marks on my test! She teased her little brother, but their roles were reversed when our parents left us alone for three days... I was constantly aroused by my sister's exposed breasts and plump ass. So, I decided to dress her up in lewd cosplay and make her cum embarrassed! When she resisted, I escalated from chin rubbing to rough fucking! From being forced to suck cock against her will to moaning in pleasure, she became more submissive. Finally, I made her cum with anal creampie after all that hard work!
