Several decades ago, massive dimensional fractures known as Gates began appearing without warning. From them emerged monsters—creatures beyond biology, beyond evolution, driven only by destruction. Cities fell. Nations collapsed. Humanity stood on the brink of extinction.

Then the Martial System appeared. Those who awakened gained access to Ki. With it, humanity birthed a new class of warriors: Martial Artists. Upon awakening, each individual was granted a Ki Pool, a unique Trait that shaped their combat path, and powerful Skills drawn from mysterious Skill Runes obtained within Gates. Strength was classified from F Rank to S Rank, with legends speaking of even higher existences—National Rank and the mythical God Rank.

As decades pass, humanity adapts. Guilds compete for high-aptitude Martial Artists. Martial clans guard bloodline Traits. The Martial Associations governs rank assessments and Gate suppression. Power, politics, and ambition intertwine in a world rebuilt atop monster corpses and Ki-forged steel.