Outta curiosity, I wanna see what kinds of Persona-esque games are out there. Your definition of that may vary but it’s interesting to see what other games have similar mechanics.
Mind Zero comes to mind (heh) since it looks a lot like a Persona clone. Other selves that are bootleg Stands, JRPG, secret world, all that. Might have more to it than I think but it’s still an interesting thing to see in a sea of games.
Other Atlus titles such as Lost Dimension have relationship systems and social links. Basically, strengthening the bond helps you in battle, and you get character backstory with it.
This feels like cheating because fangame but the JoJo fangame “The 7th Stand User” checks the punch ghost and character relationship checkboxes (latter is required for certain events or endings), and also has the interesting aspect of the MC getting a unique Stand via PMD personality test. The game’s actually very complex for what it is, and manages to decently adapt Part 3 into an RPG.