Yo, it's a Persona ass Persona game with a Fire Emblem skin.

The game is very thematically focused on the Japanese entertainment industry. Every character has aspirations within it, and apparently those aspirations helps give form to their fake persona powers.

There's talk of side quests for your party members that are based on the relationship system in Fire Emblem games which will also focus on each character's entertainment industry aspirations.

Battle system is very akin to previous SMT games, though it seems that instead of knocking an enemy down with weak / critical hits and preventing their next turn, it causes the rest of your party member to all attack said enemy during your turn.