It's easy! Just use the Roséverse installer (It's on GitHub), from Roséverse, Switch back to Juxt, and you enter to Juxt once, then on Wii U menu, on the Aroma plugins menu, go to Inkay, then reset WaraWara Plaza. Let it refresh, and turn off the console and wait a while. Then once you see Juxt's WaraWara Plaza, go back to Roséverse Installer, and Switch back to Roséverse, and there you go!