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Three years after the end of the world, Lin Ye, who had run out of ammunition and food and was chased by aberrations into a shabby basement, accidentally activated the [Ark of Civilization·Symbiosis Contract] with his blood! Bite! The contract was signed successfully! [The safe house is being realized... Your home, 'Zero', is online! Lin Ye was stunned when he saw the silver-haired girl appearing out of thin air in front of him. My home has become a spirit? And she became a beautiful girl? [Warning: The house spirit's 'zero' energy is about to be exhausted, please 'feed' it immediately! From then on, Lin Ye's apocalyptic painting style completely changed! Others fight for a bite of food, but Lin Ye hunts aberrations all over the world just to earn food for his "house spirit"! [Feed [Fragmented Crystal Core] x3, 'Zero' mood value +5, unlock function [Basic Water Purification]! [Feed [Standard Energy Crystal Core] x1, 'Zero' mood value +20, unlock new form [Weapon Girl]! Seven flowers of light bloomed on the skirt! However, when he kindly rescued the technical geek girl Su Xiaomi... Fatal warning! Invasion of strange 'female carbon-based life forms' detected! ['Zero' mood value -50! Safe house temperature -10°C! Eviction proceedings have been initiated! Seeing Su Xiaomi's bath water turning to ice and tripping over the ground while walking, Lin Ye couldn't laugh or cry. How could this be a safe house? He was clearly the most jealous person in the universe! "Zero, be good, this [Perfect Crystal Core] is for you as a snack, please stop making trouble, okay?" [Ding! Soothing success! The 'zero' jealousy value is converted into a guardian value, unlocking the hidden function [Absolute Barrier]! It turns out that even jealousy can make you stronger? !