Abyss Sequence: My Madness Cannot Be Rated

After the "fog disaster night", the sky was torn apart, nine streaks of gray mist fell, and strange beasts poured out. Humanity awakens to the "sequence" in despair, and the strengths and weaknesses are divided by rating - SSS level can fight against the Legion, and F level is regarded as waste. And I don't have a rating. Three years ago, when I awakened, I was judged to be an "F-level disabled person", and there was no such person in the number check. Everyone says I'm a loser. But they don't know—— Parasite? Kill. Lost? Swallow. Devourer? Broken. SS level genius? Not convinced? Beat you until you are convinced. My sequence is [Abyss Devourer]. The crazier, the more powerful. The more you protect, the more you destroy. On the edge of sanity and madness, I stand shoulder to shoulder with gods as a mortal—— "Rules? Those are for you." "I am not within the rules."