In 2050, a planet suddenly crashed into the earth, creating a blood-red wound on the earth - the red pool.
Just when people forget about this red pool, a virus carried by the planet is rampant on the earth, and 80% of them die or become ghouls who only maintain the bestiality of attacking people.
And the only hope for survivors is what the institute reports
"In ten years, the virus will be inactive"
Ten years later, Bai Xing, a survivor, embarks on this road to regain what the world has lost.
"This world is cruel. I never believed in the existence of hope until I met you."
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The main perspective is ten years later, and the events ten years ago appear in intervening chapters.
Cute, pure and powerful beautiful girl × genius, perverted and sinister adult man
Intention: No matter how cruel the world is, hope never disappears from this world.