Lunatic6 said: There's no good ending for the both of them.
Actually, Irisu Syndrome DOES have "good ending". Or well... ending where nobody gets killed and everyone live happily ever after... from what the player can see at least.
The strangest thing is neither of them seem to be injured, but both of their weapons look like they've caused grievous wounds. I think there my be some unlucky person off screen that's now a bloody pulp.