User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-205.197.242.168-20150909160036

I see a plot point similar to Naruto here including Rizevim as Madara, Azi Dahaka and Apophis as the "Black Zetsu", and Trihexa as Kaguya. What's left is the final between rivals, which is Issei vs Vali, which are empowered by the Rikudou expy. Maybe in the Shiva arc.