Big Brother's Promise (Taboo Stepbrother/Stepsister PI Breeding Erotica)
by Lily Kittinger
Veronica is going on a cross-country trip with her stepbrother, Brian. They spend their every waking moments together.
On one such evening, they are left stranded by the side of the road and have to wait for help. They use those hours to fulfill their forbidden desires.
This 5,000+ word story contains PI, anal sex, spanking, impregnation, stepbrother/stepsister breeding, and forbidden love.