Most would assume Kasai to be the leader of this young band of bandits, you would be half right in thinking that, mostly they all decide on things together, but Kasai's word is the most respected, regardless of knowing this is always likes to listen to the words of her friends, afterall, they are in everything together. Kasai however, is also the strongest and toughest of the four bandits, she hits harder, fights longer and goes down slower than her friends, in any fight she's the first in, and the last out. but still like any child, tears will ensue if she's beaten.
Kasai is also no use in a fight on her own, just like her friends, she can easily be overpowered if someone bigger or older than her took her on and she was alone, together the girls are a formidable fight, but alone they are just children and can be put in their place like any badly behaving child.