Others get random spouses, yet I'm paired with a school beauty with exclusive mating priority.

Urban Martial Arts · Apocalyptic Cataclysm · System Awakening · Ability Counterattack · Mandatory Marriage · Multiple Heroines · No Frustration A century of heavenly disasters has ushered in an unprecedented cataclysm! Mutated beasts rampage across the ruined wilderness, forcing humanity to retreat into safe zones and completely reshaping the rules of the world. In this chaotic era, population continuation stands as the top priority. Longguo has issued a new decree: all eligible young adults must marry and reproduce. The stronger an ability user is, the greater their duty to protect humanity — and the higher their priority in choosing a spouse. Gu Chen is an orphan living in the slums of Heishui City. His parents died while exploring mutant beast territories. Raising his young sister alone, he struggles endlessly to make ends meet in abject poverty. As his 21st birthday approaches, the deadline for mandatory state-assigned marriage draws near. With no family background, looks or power, he is destined for a random spouse allocation, leaving his future bleak and hopeless. To escape poverty, secure schooling for his sister, and protect his only family, Gu Chen spends every penny of his savings on a high-risk spiritual awakening potion, gambling his entire life on a single chance. Failure means certain death, leaving his sister helpless. Success will break his mortal shackles, allowing him to hunt beasts, earn a fortune, and rewrite his fate. At the brink of life and death amid agonizing transformation pain, a heaven-defying system activates! Breaking the limits of standard ability user rankings, he awakens a max-level hidden talent — Gravity Manipulation at the very start. He can freely adjust the magnitude and direction of gravity on all objects, boasting boundless potential and overpowering combat strength. Officially graded the lowest D-Class, he appears mediocre on the surface, yet possesses top-tier power capable of crushing high-level ability users. Most shockingly, he unlocks the exclusive supreme spouse-selection privilege reserved for top ability users! His desperate fate of random marriage is completely reversed. His sister’s stunning school beauty classmate becomes his legal wife. From then on, the impoverished slum orphan rises completely against the odds! He hunts mutated beasts for massive experience and resources, hiding peak combat power beneath a low-tier rank, crushing all rivals and dominating the dangerous wastelands. Endowed with exclusive marital privileges, he gains the devotion of the gentle school beauty, with more outstanding beauties joining his side one after another. From a bullied slum outcast, he advances rapidly to the pinnacle of the chaotic martial world, protecting his loved ones, defending humanity, suppressing ferocious beasts, and ruling the new order of this era!