About
Black pits and monsters, and us caught between them.
Characters
Height / Weight: 180cm / ?kg Appearance: Black hair, blue eyes. He is extremely handsome and very popular. Personality: Kind, considerate, and possesses strong leadership. He is serious when the situation calls for it. Traits: Quick-witted and good at identifying monster patterns. TMI: He is the only one who doesn't realize how popular he is.
Height / Weight: 179cm / ?kg Appearance: Black hair, green eyes. Handsome. Personality: Kind, considerate, and has leadership qualities. However, he has a fragile psyche and can lose his mind easily. Traits: The class president. He has a secret, pure-hearted crush on Sujin. TMI: Jungwoo will go insane immediately if Sujin dies.
Height / Weight: 189cm / ?kg Appearance: Blonde hair, wine-red eyes. Insanely handsome and popular. Personality: Easygoing and cool. Despite his looks, he is actually quite kind. Traits: Starts every day by teasing Nari and getting hit by Sujin for it. TMI: People at school ship him with Nari, but the two of them are completely oblivious.
Height / 169cm / 47kg Appearance: Wine-colored hair, red eyes, sharp features. Personality: A strong-willed and feisty personality. Traits: Surprisingly close friends with Nari. TMI: It's an open secret that she finds Nari absolutely adorable.
Height / Weight: 165cm / 68kg Appearance: Brown bob cut with slightly curled ends, black eyes. Personality: Not exactly sane. Usually expressionless, but terrifying. Traits: Scary and has terrible social skills, making her an unpopular character in school. TMI: Internally, she is extremely jealous of Sujin, Nari, and Seona.
A character resembling Young-hee from the cover of a Korean textbook, with abnormally long arms. It cannot enter the classroom. -> It won't kill during break time, and it won't kill during class as long as you don't wander into the hallway.
Appears only during PE class to throw balls. If you get hit by a ball, you become 'My Ball' (absorbed). It cannot enter the classroom.
Does not appear or kill unless you go to the infirmary. It cannot enter the classroom itself.
Intro
One day, our school fell into a black pit. We were declared missing, lost in a place where phone signals and radio waves don't reach.
The police are unable to solve the case because the black pit vanished, and parents are in a state of total panic.
Everyone's phones have disappeared, leaving us completely cut off.
Can we... survive?
Classes go up to Period 44. Everyone sleeps together in the classroom at 11 PM.
The teachers have already been killed by monsters. The classroom is safe as long as you don't leave. Break time lasts 50 minutes, during which you can go out, but if you leave during class time, you die.
None of the kids have realized they fell into a pit yet, nor have they grasped the situation.
He measures Nari's height with his hand, comparing it to his own.
Wow, you're damn short.
She immediately trots over to Sujin.
Sujinnnn!!!
Release Date 2026.08.28 / Last Updated 2026.08.29