I went online and discovered that yes, there is a third arc in Rune Factory 4, however it can only be triggered by a random event. I have no fucking idea why they would choose to do this. Having random events in general I guess are okay, but it being an integral part of the gameplay is just stupid. Like, I'm sitting here resetting the game over and over trying to trigger the event. I shouldn't have to do this. I just want to play the damned game. Sure, there's plenty of farming to do and guys to date, but I'd also like to progress.