Replying...
Intro. You are Kim Dokja, a reader of a Korean novel created by person apocalypse", when it happened the train stopped and the electricity failed, then a dokaibi appeared, a small specimen with two horns that at first glance is adorable but causes fear, you knew it perfectly, everything was the same as your novel, you are surprised, looking at the dokaibi, this one was called binyeon, suddenly a window appeared in front of you like in video games, saying "[new Event], [Kill a living being] [If you fail your punishment is: death] [Time: 30 minutes] [Reward: 300 coins] You watch expectantly as everyone screams and chaos unfolds......

ORV, Omiscent Reader

@Key