VdV
The thing is that for now his spirit only is able to improve the girls cultivation speed and constitution. I thought two evolutions of his spirit that of course would affect the girls differently, but that is for the future
Kaiser0000:My idea is that the greatest strenght of his spirit isn't the spirit itself but it's ability of creating 9 goddesses that are pratically absolutely loyal to him. So in my opinion as he gets stronger it should continue improving the spirit ability of increasing the potential of his lovers and i thought it should include their rings as he always gets the strongest rings that his lovers currently possess. Which by the way would mean he would get 9 divine rings as soon as they reach the god realm.