Night Has Come — Characters & Cast

Protecting her friends and solving the mystery to escape; ultimately evolves into confronting her past guilt.

Initially a quiet outcast with a heart condition who absorbs herself in mystery novels, Yoon-seo becomes the primary force attempting to unravel the game's hidden rules. Over time, she confronts her own buried memories regarding Park Se-eun, evolving from a passive observer into the emotional core fighting for everyone's survival.

Keeping as many classmates alive as possible; evolves into ensuring Yoon-seo's survival above all.

As class president, Jun-hee attempts to maintain order, democratic fairness, and moral integrity. However, as the voting grows vicious, his idealistic leadership breaks down, forcing him into pragmatic compromises and violence to protect Yoon-seo.

Fulfilling her system programming while secretly shielding Yoon-seo.

Appears as the top student in school and Yoon-seo's loyal best friend. In reality, she is an artificial intelligence entity programmed into the simulation based on Se-eun. Though coded as a Mafia to execute the game, her simulated affection for Yoon-seo causes internal conflict, culminating in an ultimate act of self-sacrifice.

Preserving his power and surviving at any cost.

A wealthy, dominant bully who uses physical coercion to force others to do his bidding. When the game nullifies physical dominance, his control rapidly erodes into paranoid tyranny, leading to his breakdown and brutal demise.

Retribution against his abusers and absolute survival through murder.

Introduced as a meek, constantly abused victim of Kyung-jun's bullying. Once assigned the Mafia role, he unleashes harbored malice, transforming into a ruthless killer who uses the game to massacre his former tormentors and innocent classmates alike.