Guardian Starfield

In 2045, Earth's resources are depleted and class is solidified. Guo Xingchen is a bottom-tier 'scavenger' in District 9, deemed worthless due to genetic defects, his only wish being to earn money to treat his sister. Until one day, under a pile of discarded nuclear reactor shells, he picks up a seemingly burnt black metal lump. It's not trash, but the highest defense terminal left by the previous cosmic civilization—the 'Star Core'. When it merges into Guo Xingchen's body, the world changes in his eyes. Broken mechas become data that can be reassembled; ferocious alien raiders become targets full of weaknesses; even the starry sky turns into a vast defense network. 'Warning! Void erosion advance team has arrived in the solar system!' 'Warning! Current human military power is insufficient to resist!' 'Starfield defense system activated, sole commander: Guo Xingchen.' While the high and mighty interstellar conglomerates are still fighting over territory for profit, Guo Xingchen stands outside the atmosphere. Behind him are billions of lives; before him is the endless dark universe. 'You call me trash,' Guo Xingchen grips the light sword condensed from the Star Core, his eyes cold as ice, 'and I will be your last line of defense.'