It's a jrpg where you level up yourself and your personas to fight monsters in a dungeon-crawler. Your character has several personas that you pick from while the other characters have 1.
You get personas by fusing the ones you find into higher and higher level ones. The personas are based off the tarot card arcana like strength, devil, angel, queen, princess, etc.
THat's the fighting portion.
Then there's somewhat of a dating sim portion of the game where you go and hang out with people. I think there are either 12 or 20, I can't remember, but you level up those arcana through these social links (s-link). This gives your persona of that arcana better abilities and fusing power, and if you have the corresponding persona on you when you socialize, then that boosts your social power. So the two parts of the game influence each other.
It's about using the right personas to do the right job (like elemental counters) and the right responses to the social interactions.
Plus the story is awesome and the characters are very unique and fun, and great music/presentation.
