User blog:Swordbirth18/Possibilities for highschool dxd season 4

What do you think is the possibilities that will happen in season 4 knowing that the end of highschool dxd born was been mildly off from the storyline? Is still have a chance of having rating game between Sona and Rias?? and also is it still be able to adapt the badassery of the fist fight between Sairaog and Issei??