Tokyo Mirage Sessions #FE is dead from Cemu 1.7.2 to Cemu 1.7.5 for good, I hoped that Cemu 1.7.5 will work and play it with the graphic fix, but nope all I see is black screen, all I see that I must wait long, very long to play this game.
Have you tried starting it with the controller disconnected in settings? You have to do that to get Smash Bros to work, so perhaps this game is similar in that regard?