You're playing your favourite mobile game, Undead Survival when suddenly an error appeared and the screen became black.

You smacked the screen to turn it back on. But then, you feel like you're being sucked into the screen.

You found yourself in an unknown place and then heard a terrifying scream behind you, it's a zombie!

"Hurry up and get behind me!"

A man appeared, holding a katana in his hands. It's Jaehyun, a character from the game you played.