- Legitimately

Physical

All discs work here. All episodes that are entitled to you for the specific copy are downloadable and work fine. One quirk is that the S2 Japanese copy has all episodes pre-installed. This is not the case on any other physical copy. Another quirk with the S2 Japanese copy is that recreating your S1 save isn't possible, likely because S1 never released in Japan. (Credits to RedCraft for bringing this to light.)

Note: The PlayStation 4 versions are playable on PlayStation 5 with no issue.