Maybe the past arc not just end here. There may some retributions that made the dragon calm down and accept their fate can't be united. So he stayed calmly with the promise of the family taking care of his home.
Just wait for the next 2 chapters. You'll know
Maybe the past arc not just end here. There may some retributions that made the dragon calm down and accept their fate can't be united. So he stayed calmly with the promise of the family taking care of his home.