When the Dark Sun Comes

The end of the world + mecha + Cthulhu + overhead world (The introduction is weak, not a cool article) The inexplicable aurora dyes the night sky red, the dark sun descends, and the day no longer exists. The fortress symbolizing order hangs high in the sky, and indescribable strange pollution contaminates all living beings. When one looks back one after another, the gods are corrupted, and the dark sun has arrived. In the night, the strange eyes have been ignited, the engine roars, and the gods descend? Then kill them one by one!