Doomsday: A Blonde Foreign Beauty Shows Up with a Kid and Calls Me Dad from the Start

[Decisive and ruthless + calm and collected + multiple female leads + new apocalypse + cheats from Chapter 20] When the apocalypse arrives, monsters hide among humanity and social order gradually crumbles. The dangers in plain sight are nothing to fear; the hidden undercurrents are far more terrifying.

On the eve of the apocalypse, Yun Mo's ex-girlfriend Monica shows up at his door with a little boy.

Monica: Yun Mo, this child is your son.

Yun Mo: So you say. We broke up three years ago, and I'm not in the habit of raising someone else's kid.

Monica: He really is your son. He's three years old.

Yun Mo: Three years, huh? Who knows if you were with other men during that time.