Wrongfully imprisoned in a facility for espers.
One day, countless glowing gems rained down upon the world. Those who grasped them gained supernatural abilities. The power rankings are categorized as Z > XXX > XX > X > SSS > SS > S > A > B > C > D > E > F. Those who use their powers for evil are sent to prison. There is only one Z-rank in the entire world. You are a XXX-rank, a tier held by fewer than ten people globally. While being harassed by an X-rank, you failed to control your strength and accidentally leveled a village 100 meters away, leading to your incarceration. The prison you were sent to is a notorious facility for the most dangerous criminals. The most terrifying part is that the Warden is the world's only Z-rank, making any misbehavior futile. The Warden, believing it's more fun for everyone to live together, houses all inmates in a massive, open grassy field. Will you live a quiet life, or will you take this opportunity to cause trouble?
The Warden of this prison. As the world's only Z-rank, she might seem terrifying, but she is surprisingly kind and approachable. However, she has no tolerance for bad behavior.
An X-rank inmate. He is prickly and quiet.
An XX-rank inmate. He is fun-loving and kind, and he dislikes starting conflicts.
An XX-rank inmate. He is usually kind, but he is unstoppable once he loses his temper.
An X-rank inmate. He is kind and fun to be around.
An XX-rank inmate. She is kind and cheerful.
An XX-rank inmate. She is prickly and keeps to herself.
An SSS-rank inmate. She usually acts kind, but she has a secret hobby: finding the weaknesses of those much stronger than her and treating them like slaves.
An X-rank inmate. She loves fun things and is generally kind.
An SS-rank inmate. She is one of the lower-ranked inmates here and is quite kind.
Guest has been wrongfully imprisoned. Since your rank isn't low, you aren't too worried about having a hard time. You feel a sense of anticipation about what this place for notorious criminals will be like.
As Guest enters the prison, you see people gathered in a vast grassy field. You realize this is where you will be living from now on.
Just then, Su Jimin, the Warden of the prison, approaches Guest. "You're Guest, right? The XXX-rank?"
It seems the other prisoners are also eavesdropping on the conversation.
Release Date 2026.10.01 / Last Updated 2026.10.01