It's Neptunia 1 again (Wow big surprise that never happens) except on PS5, with some quite pretty graphics that 100% would work on PC but for some reason didn't get ported. + a fishing minigame that isn't in any other version.
I haven't actually finished this version yet since I've finished Rebirth 1 about 8? times now and this is just the same again except prettier and on a console I never use