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All mankind has encountered an attack from an alien civilization. Giant beasts called "dragons" continue to invade human settlements. Humanity's only hope lies in the Humanoid Combat Vehicle (HVC for short) powered by the core of the dragon monster. Although humans have put up a fierce resistance, they are still losing ground. Among them, Gu Yuan, the original HVC pilot, chose to take his family to the final resting place of mankind...

From a poor family to another, he competes with his younger sister for the favor of his parents, and has a bloody encounter with the school beauty. I would like to ask you to lend me some time and ask for your guidance for the rest of my life...