KIBA, like Trillion Game is about a power play between people who try to outmanouvre each other -- playing the late-stage capitalist game.
KIBA has a few more layers of deception, even though it's only a film, not a series. The writing is much tighter, the plot much faster.
In both titles, we have morally grey main characters, as well as at least one idealistic person, who provides a good balance.