Regarding Player Character Death

[Rival Max]

Oooh! I have questions!
I guess death is not something that seems explored in most Pokemon stuff very often- what would normally happen in this Pokemon world after a child is executed? I'm assuming there will be some sort of consequences for doin' a murder, since Pokemon worlds generally appear to have societies with laws against it.
Would normal residents in this universe expect cops and police investigations?
Would they expect a crime scene thing for the corpse, or a state-funded funeral?
There doesn't need to be spoilers for what is /Actually/ gonna happen- I'm just trying to work out what our characters might expect.

I know there are graveyards, and people die- theres at least one scene of that in Pokemon Sun- but they don't always take all their pokemon to the grave with them. Did all of Williams Pokemon also get melted?

Without any spoilers you should assume that things like murder would get investigated. In Blue the cops have talked with and investigated the team. Now the story may only briefly cover this or it may be a big part of the future but deaths of pcs or npcs is taken seriously.