The Ultimate Shut-In, Chapter 4

Chapter 4 opens with Do-yoon analyzing the aftermath of the night raid, salvaging monster corpses for resources. He crafts advanced defenses using newly unlocked blueprints and prepares for the next wave. Ji-eun, separated and on the run, activates a system prompt of her own—revealing that she might also be a player. A brief flashback hints at the origin of the apocalypse. The chapter ends with a new quest: “Protect the Core,” tied to a glowing object hidden in Do-yoon’s room.