If you are going to do family incest then go all the way and not use stepbrother/father
There are 4 very short stories in this book. The first one is about 2 step brothers and their step dad. The second one is about the seduction of one step brother by another step brother. The third one is about one step brother initiating another. And the final story is about two step brothers sharing a toy but not each other. My major complaints are that the firs story has too many repetitive phrasing, none have much of a context for the sex, and the narrator often reads too fast, thus making almost all of the stories sound perfunctory instead of hot and sexy.