Valken sighed watching Hotaru and Ryung relax. " I supposed I could have done more.." He looked back to the ones who perished behind them. The poor souls, they didn't have a chance and had no idea about the forces that worked against them. Perhaps if they knew, their deaths wouldn't be so traumatic. It was a strange occurrence that he was having sympathy for screaming pain where typically he would just opt it to the fault of the victim. Perhaps it was the same sympathy he has for his parents and the pain they went through to keep him alive. They found themselves in the predicament of taking care of a demon child that was barely theirs and instead of giving up, they rode through it and persevered. And now these people are suffering for no reason only that they were in their homeland. 

Valken became angry, he ground his teeth together and turned to kick the side of the boat. He did not know what to do with himself, if he should let things be and stay on the boat or go out there again and bring back more survivors. He could very easily do it too it would only take as long as the time it would take to find them. 
But, he figured that there was a chance enemy demons could jump through his portal too, just as Hotaru and her father had done and he would be endangering the entire boat and possibly the others. It could be a disaster. 
So he stood there facing the dying city, him particularly could hear all the prayers to their gods that they had either been yelling or whispering. It was difficult to hear family's try to bargain with themselves in order to save one another, particularly their children. But it does not matter to these Demons and unlike Valken's demonic principles, they would have no problem slaying children or the elderly. It just made Valken almost wretch as there was always a downside to his super sensitive hearing....