What to do? Stuck on side quest.

Hi! I just discovered the Last Remnant wiki. Wow... such an overwhelming amount of info I had no idea about lol. Anyway, I'm stuck in this quest: http://lastremnant.wikia.com/wiki/Bravery_and_Loyalty I am redirected there. I go and kill monsters. I arrive to a room with a couple (or maybe 3?) characters, then, the view switches. I can move the camera, but I can't do anything else, except make a soft reset. No other controls can be activated. Is this some bug? Or did I miss something necessary to go on?

For the moment, I am at Ivory Peaks gridning for a bit. But would like to return to Robelia castle and finish that. Any idea why that happens? Thanks!