User blog comment:B214/High School DxD DX.4 discussion/@comment-30924344-20170721201027/@comment-24502975-20170722004042

Amphitheater that was built in the Fallen Angels' territory and bears the name of executive Armaros. There's an image of him on both sides of the main gate that looks just like the real one.

Yeah, that's what it says. Looks like it was an error after all. And at one point the 3 of them were at risk of having to separate but Sona was able to help so now they live in an apartment managed by the Sitri's.