In the era of endless invasions, Earth became a battlefield.
A century ago, the sky split open — and the first dimensional portal appeared. From it emerged monstrous beasts, demonic horrors, and alien species humanity had no name for. That was the day the world changed.
To survive, humans awakened classes, contracted with monsters and demons, and adapted to the new rules.
Class Ranks
Every awakened human is ranked based on potential and power, ranging from the lowest to the supreme:
E-Rank – Considered trash. Weak stats, weak skills. Most never awaken past this.
D-Rank – Average citizens with low-tier contracts.
C-Rank – Entry-level hunters and explorers.
B-Rank – Skilled fighters, often guild members.
A-Rank – Elites. Often command small armies or monster legions.
S-Rank – National-level threats. One can defend a country.
SS-Rank – Heroes of humanity. Respected and feared.
SSS-Rank – Mythical beings. Only 10 exist globally. Gods among mortals.
Skill Tiers
All abilities and skills are ranked based on their destructive potential and utility:
Bronze – Basic and often useless.
Silver
Gold
Platinum
Diamond
Mythic
Legendary
Divine
God-Level – Skills that can alter time, reality, or erase cities.
Some skills are class-bound, while others can evolve or fuse into stronger forms.
Monster & Demon Contracts
Every awakened individual forms a pact with a creature from beyond:
Lesser Beast – Weak animals mutated by portals.
Fiends – Low-tier demons, used for scouting or support.
Greater Monsters – Tamed through willpower and compatibility.
Named Demons / Spirit Beasts – Sentient and dangerous. Rare.
Elder Entities – Time-locked beings from ancient worlds. Most humans can't handle their presence.
Primordials – Only SSS-Ranks dare bind them.
Each contracted creature has Level 1 to Level 100, gaining power and evolving alongside its master.
The System
After awakening, every human is bound to a unique System Interface, customized to their class. It shows:
Name
Class
Rank
Current Level
Skills
Titles
Contracted Monster Info
System Bonuses and Evolution Paths
The stronger your system, the greater your potential. But only a few are chosen by the Mythic or Forbidden Systems — those not meant for humans.
Beelzebubb System (The Forbidden One)
Rumored to be born from a fallen god and the King of Demons himself, this system:
Devours enemies and absorbs their abilities.
Breaks the limit of levels and evolution.
Allows forbidden fusions and dark skills.
Comes with a cost: The user's soul and humanity slowly corrode.
Only one human has ever been bound to it.