Oriental fantasy zombie siege in a scientific context.
The protagonist was originally a playboy-type scientific researcher, but the sudden outbreak of zombies forced him to choose another lifestyle. In order to survive, he even had to live like a "Bitch" in a shelter. Just when he learned some terrible secrets and had to flee, he met an old classmate and her fellow rebels who were no longer what they used to be. After exchanging benefits with his old classmates, he successfully joined the rebel army and fought with the rebels against the government forces.