All night.
Positions that the Kama Sutra had not conceived and that my modern memory supplied with vivid clarity: Sera against the wall, her legs around my waist, my cock driving upward into her while Lira knelt beneath us, licking my balls, her tongue finding the base of my shaft with each thrust.
Lira on her hands and knees, her face in Sera's lap, my cock pounding her from behind while Sera's hand found Lira's hair and held her in place. Both of them on their knees, asses raised, faces in the pillows, as I moved between them — three strokes in Sera, three in Lira, the rhythm building until neither sister knew whose turn it was anymore.
