Attack on Titan: Doomsday Bunker

When doomsday arrives, Cheng Feng sacrifices his own lifespan to shelter humanity in a bunker for thirty years. But after three decades, he is betrayed by his adopted daughter Cheng Xin and the ambitious Lu Wenjie, who forge fake footage of life on the surface to deceive and incite the people, sending Cheng Feng to the gallows. The masses believe the lies and blow up the bunker to reach the beautiful oasis above—only to step straight into a captivity trap set by the Titans and Lu Wenjie. When the Titans reveal their true faces and begin the slaughter, the people are filled with regret. Will Cheng Feng, who has long mastered mecha technology, let go of his resentment and save humanity once again?