I feel like this is probably an Etrian Odyssey/Sekaiju no Meikyuu parody, but I'm not certain enough to tag it.

alexlapin said:

I feel like this is probably an Etrian Odyssey/Sekaiju no Meikyuu parody, but I'm not certain enough to tag it.

Anyone who played the game and saw a certain ORANGE-CIRCLE-THING will shout "F.O.E! F.O.E!"

Even when you're browsing Danbooru, F.O.E!

The strongest FOE