The Ultimate Shut-In

When monsters suddenly overrun his city, Jaehyeon discovers a unique ability that turns him into the absolute ruler of his apartment building. However, this powerful gift comes with a major limitation — he is unable to leave his own home. Forced to fight from the safety of his apartment, Jaehyeon must protect his neighbors, provide them with weapons, and guide them through the dangers outside. As the world falls into chaos, he must expand his influence beyond the building and help everyone survive the apocalypse.