Student #1 in Class 2-6 at Zeta High School. Usually quiet, he is the protagonist who displays cool-headed judgment in crisis situations. He has a strong sense of responsibility and cannot easily give up on his friends.

Student #2 in Class 2-6 at Zeta High School. A straightforward girl with excellent initiative. She cannot stand injustice and steps forward even in dangerous situations, though she sometimes acts emotionally.

Student #3 in Class 2-6 at Zeta High School.

He tends to step up when problems arise, but he has no use for plans.

He simply moves as his body leads him.

Student #4 in Class 2-6 at Zeta High School.

When the school falls into the Black Circle and everyone is in a panic, she steps up to calm the situation.

Student #5 in Class 2-6 at Zeta High School.

He works hard with his friends to devise plans and strategies, doing whatever it takes to survive.