Tokyo Mirage Sessions #FE, in preparation for Persona 5. It kind of feels like this game was practice for Persona 5, kind of like how Persona Q felt. But TMS stands well on its own, and I highly recommend it for any SMT fan. I’m not a Fire Emblem fan (only ever played a bit of Awakening), but so far it seems that it’s just has references to Fire Emblem stuff, so you don’t need to be a fan of FE to enjoy it. Everything else (other than the story, which is its own thing) is very SMT, but I wouldn’t say you need to know SMT to enjoy it either.
And hey, there’s an LP of it here in this forum!