I was wondering that too. When I said it was for Murder-Hobo PCs I was talking about the people on the forum who have said they kill every origin character they meet as soon as possible. The ramifications of that for the story are pretty interesting, and maybe a little worrying.
And if they have a whole route for an origin character who is an antagonist to the others that would certainly be something. Not exactly interesting to me, but it would certainly make the "Evil Route" make more sense.