one thing that will always be funny to me about batfam is that jason is forever convinced that dick is bruce's favorite child while all of his siblings know for sure that bruce's favorite child is actually jason
some random reporter: who's your favorite child?
bruce: how DARE YOU imply that i play favorites, i love ALL of my children equally
dick, without missing a bit: oh he absolutely plays favorites, it was jason
Context - Azure is not an evil man. Depsite being revenge driven, he would NEVER go after someone who is innocent. Even if they have ties with whoever he is after.
If he had known that Morro's parents had a child, he would have waited. At least until he was old enough to take care of himself. But after realising that he had created an orphan, that he had gone against his own morality, the guilt begins to set in.
He would take off his allied armour and bury it alongside them, where eventually it would be found and placed in the Ninjago Museum of History.
Him and Morro would never truly "meet" (not anytime soon at least), but he would listen out for anything regarding him. And when hearing about his death both in life and as a ghost, along with what he had done during Possession, the guilt only becomes heavier and heavier.
By killing his parents, he had created a chain reaction of events. Events that affected the one thing he never wanted to hurt. Innocent lives.
He can't escape this guilt. Having ties with the Underworld in turn makes him mostly immortal, now forced to carry this burden to the ends of time.