Laala and Yui hears that Mirei is coming to Paparajuku. Laala tells Yui to meet Mirei at the Prism Stone Store. Yui meets Mirei, not realising who she actually is instead thinking she is a new idol until they enter PriPara. After Laala explains to Mirei why she looks different, they show her around PriPara. Mirei reveals she is the National Disciplinarian Champion and criticizes Mimiko for breaking school rules by not being courteous to guests...