Lucy has his army of demons at the ready, it takes place in a desert landscape that used to be Tokyo and there is a black moon in the sky next to either another magic moon or the sun, which could be a dead Kagutsuchi. SMT4A DLC implies Lucifer killed the Demi Fiend afterwards so maybe that mysterious Akira/Aquila looking guy is connected to that DLC chapter?
No Mutants Allowed
Walpknut
Walpknut
Would make sense considering the protagonist of SMT 2 appears reincarnated in Nocturne.