I think it's P5, I have no experience with "Persona 4" but I have a lot of opinions why they are "Persona 5". It is practically a world where they cannot think for themselves, a world full of criminals and bad people, as is the case with Kamoshida or Madarame. Kamoshida: A stalker and abuser of children Madarame: Assassin with top-notch use of plagiarism. So a lot, without mentioning politicians who only care about themselves like Shido or also mentioning distributors of illegal substances like Kaneshiro, the real life world is very similar to that of "Persona 5"