Kurumada is a muscular young man with bright pink eyes and dark skin. He has layered, fluffy, short hair which goes from green to dark blue in shade from the inside out.

He wears a dull black tank top with a frayed hem, orange pants, and bandage wraps around his wrists.

Kurumada is brusque and does not trust people easily. He tends to banter with others and occasionally refer to them dismissively. 

Kurumada was one of the 20 participants forced into the Death Game, he was alone. His First Trial involved running to a red button while two walls closed in on either side of him. He was unable to reach the button in time and ended up crushed. 

After his death, Kurumada's AI was uploaded into a doll that looked identical to him in order for him to help the Death Game participants during the third chapter. He was paired with either Kanna or Shin as their support (depends on who died in the second Main Game).