Niki is convinced her boyfriend is gay. He wouldnt touch her at a pool party in front of anyone. She shares this with her stepbro, and offers him a blowjob.
After all, she does need some sort of loving. Stepbro allows it, as long as Niki doesnt mind leaving any evidence behind. She was able to suck it all down to keep it their little secret.
The next day, NIki wants to spend more time with her big stepbro. She suggests watching a movie, but they end up making a movie! They start to fuck right there on the couch until both of them are fully satisfied.
A few days later, stepbro walks in on NIki jerking herself off. Instead of being embarrassed, Niki offers to let stepbro assist her. He fucks his sisters tight pussy until it forces the cum out of his cock all up inside her.
The evidence wasnt swallowed this time around, but we are sure it will still stay between the siblings.