I haven't actually played this myself, but I've been watching the boy go through it and it just seems like a real good fun time. Simple snappy combat and menus, streamlined progression, weird emergent mini-narratives, flashes of Miitomo and Tamagotchi Life.

My 6yo played and finished a JRPG starring himself, his family, Mario, Minecraft Steve, Admiral Ackbar, various other Miis we managed to drag over from the Wii U, and he's still having a great time in the post-game. A triumph.