An unknown phenomenon transports both SEES and the Investigation team into a school festival with shadow filled labyrinths causing the two groups to team up to escape
While trapped in the labyrinth they encountered a strong FOE that chased them down. Thankfully, it was quickly taken care of with the help of Ultimate Mystery Food X.
Later Mitsuru wondered if she could use their cooking to make new weapons to defeat shadows however, all four girls overhearing her talk about their food as if it was a research project. insulted by Mitsuru they ventured back into the first labyrinth and tricked Mitsuru into drinking the potion that made them all shrink before confronting her.
