Access powerful, legendary Personas from previous entries in the series (like Orpheus, Thanatos, and Izanagi) to give you an edge in combat.
"Another heist complete," a voice crackled over the earpiece. It was doc, the handle of the group’s resident tech wizard. "But this isn't a standard Shadow, kid. This is a Repack. Compressed, unraveled, and stitched back together. It’s heavy. It’s messy. It’s… gnarly."
In total, the official "Persona 5 Royal Ultimate Edition" includes 45+ pieces of DLC, but many are bundled into packs. "28 DLC" in repack terminology usually refers to the number of installable/selectable components or separate Steam database entries.
The Ultimate Phantom Thief Experience: Persona 5 (inc 28 DLC) - Gnarly Repacks