Two years late, I think it's because Nyx doesn't operate alone. Spoiler alert In The Answer, it is revealed that Nyx apocalypse-bringing power are activated via mass of the souls, a.k.a. humanity, that wish the world to end. It forms another entity called Erebus, and he need to touch Nyx to hasten the apocalypse. I think in the past people don't want world to dead and that's why Erebus won't reform and Nyx won't be activated
Plus you get to meet two of peraona4 girl carcters wich is a red girl and a girl with green but I didn't get to that part cuz I'm still playing as a boy ...............
yeah i was right he did look like pharos anyway this is my conclusion after pharos said goodbye he suddenly appered right it makes sence and agis said he is dangerous and you have to notice he is death arcana