Using this premise, a futanari NAME_1 and futanari high elf fighting each other while their two tribes watch and encourage them. As they lay beaten and bruised both try to violently and aggressively trying to rape the other. NAME_1 does manage to get her cock in the high elf pussy. The high elf is ready for this and shoves her own cock in to the NAME_1 pussy. Their dicks swell knot. They physically assault and beat and hit each other trying to rip the knots out of their pussys. They both overfill each other's pussy with their seed. They are stuck knotted to the others pussy for the rest of their lives. The have a sudden realization that they are both sisters and had been impregnated. Their tribe's masturbate and shoot hot cum on the sisters in disgust. Write a long erotica about it with any details needed or missed with sexual dialogue.