kuja is deeply childish, and likes to create conflict for fun.

this bar can mean one or all of these things:
a) he sees the character as someone who will respond well to his "wanna play" theatrics
b) kuja wants to bully around this character.
c) kuja is bullied around by this character.
d) kuja wants to bring genuine harm and suffering to this character.



...good luck figuring out which!