>>535099107
Yes, it's pretty much half of the game. Go do the Palgadol chapter ASAP, it's a big bulk of the postgame and built for right after you beat the main story. You have to do Chemica's event (event 41) in the flower garden and then she'll leave a message outside Rabi's house, you do everything related to that and then after all that, you go to the western plaza in Haven to start it.