Verner observes that Neferefre and Nyuserre were brothers, both sons of Neferirkare Kakai, and that Neferefre, Neferirkare's eldest son, was in his early twenties at the death of his father, thus in an optimum position to inherit the throne.
Verner observes that Neferefre and Nyuserre were very likely full brothers, both sons of Neferirkare Kakai, as indicated by archaeological evidences. Furthermore evidence shows that Neferefre was Neferirkare's eldest son and in his early twenties at the death of his father, thus in an optimum position to inherit the throne.