He kind of have an obsession with grayson because he reminds him of koi he loves the most and Dominic who he hates the most....and actually i have read bliss story he pampers and loves him alot compared to others...ash did terrible parenting job but I still can't hate him because I have read his story
I will disagree on your point that chase is normal, can we do some checks about chase behaviour
- Shooting People even after he got together with Joshua just because they irritated him.
- Abused his other bodyguards and previous bodyguards.
- Throwing a person of a Moving Helicopter
- His behaviour is very worse not limited to the starting Joshua, just because we see Chase as a cute puppy in Joshua's eyes doesn't erase Chase bad behaviour to other people.
- He still treats others as trash even after the end of the story, he had no character development.
I might get hate for this but he had 0 character development, it's more like he started to show his vulnerable side to Joshua. And let's not forget the real normal one is Bliss in the family.

Okay guys don’t jump the gun and hate on Ashley Miller there is a lot of layers to their characters and reasons behind it. In other stories you would understand a little bit on why they are raised like that because all children of the miller (maybe not chase cos he is the most humane like one) are crazy they don’t understand human emotions or there is something lacking in their psyche to make them not understand things fully. Also the miller family is rlly messy (even grandparents are super weird). But I only know one spoiler that the kids almost killed their mom which is one of the reasons why he is strict on them. Also he spoils Grayson compared to his other kids (cos Grayson looks a lil bit like Koi by a lil I mean the ears which is funny)