Kurono survives without the suit because he is unusually resourceful, fast- thinking, and stubbornly hard to kill even when he’s underpowered. In Gantz , the suit gives a huge advantage, but Kurono has several moments where he gets by through improvisation, timing, and sheer fighting instinct rather than brute protection.

How he pulls it off

  • He improvises in combat. Kurono is shown using the environment and enemy weak points instead of relying only on the suit.
  • He stays mobile and unpredictable. Even without the suit, he can evade some attacks and survive dangerous situations through quick reactions.
  • He gets lucky, but not only lucky. Some encounters are close calls where timing and enemy behavior give him a chance to survive.
  • He grows into a better fighter. Later in the story, he’s no longer just a reckless beginner; he becomes more capable at reading fights and leading others.

In plain terms

The suit is a massive power boost, but Kurono is one of the few characters who can still function without it because he learns fast and reacts well under pressure. So the answer is: he survives through a mix of talent, improvisation, and story-level toughness, not because he’s physically equal to suit users.

If you want, I can also give you the specific Gantz arc or scene where this happens.