Err, let's see... stained glasses, but I don't think they're themed after religions, so it's philosophy themed... I guess. Looks like it's my turn to be stumped today. I'll go with TestAddress
I now realize how awful i am at making puzzles Click to expand... Don't worry, we're pretty dumb too.
Spoiler: Guess haven't come up with anything concrete but 5 saints with their faces marked as ? 5hijima? Just from the "5" part, still thinking
Can I get my second guesses, I'll probably go with TestAddress too. Because in his last banner, he had painted glass too.
....So the game's finished? Atleast keep denying other answers and cope with your answer like a true manga reader!!!!
Was it the answer? Was @Atifus the answer? I mean, since they have "?????" on their face too?