Not too long ago, Atlus USA decides to sweeten things up to get sales for Persona 3: Dancing in Moonlight & Persona 5: Dancing in Starlight going. Sales in Japan were bad for the game. So Atlus USA decides to give Goro Akechi & Shinjiro Aragaki as free DLC preorder bonuses.
I don’t remember if these 2 characters were paid DLC characters or not in Japan, but it is kind of big deal here if they will be paid DLC characters. A small price to pay to get some sales numbers going.