Considering the only way to Mega Evolve your Pokemon in Sun & Moon is by getting a post-game Key Item, would it be possible to use the PKHex to inject and add in that item early? I'm just wanting to be able to Mega Evolve the Absol I injected in.
Is there any way to unlock or edit the particular Key Item--the Key Stone, if memory serves--into your inventory before beating the game? I saw the ability to set a few flags via PKHex, such as the Champion flag, but no way to add in Key Items.