User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-41.13.36.206-20190820191417

So in the end, Issei will need to gain and master True DxD because in Rating games the use of familiars is restricted to a certain time so he wont be able to use it properly in Rating games. Do any of you guys feel that Indra will end up being to Ise's what Jiren was to Goku in order to make Issei gain and perfect DxD? Also I wonder what Vali will get next volume. But its pretty clear to me that from now on Issei's development will be more on his body than anything.