Don't get into the Trails series. Not because it's not good, but because the grindfest is definitely better suited for when you have a few JRPGs under your belt. If you like Persona 5, I recommend looking around at ATLUS's other entries. There's the Digital Devil Saga, Soul Hackers, Devil Survivor, Raidou Kuzunoha, the other Persona series... I really liked Devil Survivor 2 growing up, it was light-hearted in comparison to everything else despite the eldritch gods plot.