River Town
From DALpedia
River Town is the major and perhaps "capital" area of Helternia. The city was protected by the Blue Minotaur until its defeat.
Duilin's house is actually in River Town. The last time he was actually at his house was in Chapter 6. He was about to be evicted at the beginning of the chapter, so it's unknown whether or not the house is legally still Duilin's or not.
River Town is currently still a safe and standing settlement. However due to the loss of the Blue Minotaur and the great rise of the Kandarinian Sovereignty, it is highly likely that the town will be taken over.