User blog comment:B214/Volume 22 spoilers/@comment-74.173.162.168-20161030032159/@comment-9595671-20161031195742

I agree, I even worry Hades is already "dead" considering his role and appearance, makes you wonder if that's why his brothers couldn't punish him much. Can't do much if your already dead after all.

Plus it's not just Issei, most of the factions after the events of Trihexa's rampage will likely not want war or destruction of any kind so Indra will likely have to fight them too. Indra wanting a war? I have a good feeling he's only going for it cause he thinks he can win.

It's on Baka-Tsuki, so you can read EX if you need to.