Hide-and-Seek"

While Yui searches for them in a game of hide-and-seek, Sat-chan and Kotoha sneak off to gather some Road Passes for Kotoha's game, ending up all the way in Akihabara. Later, the Colors come across some closed off alleyways, becoming curious as to why they are actually closed off, eventually discovering they were covered in wet paint. Afterwards, the girls consult high schooler Nonoka about how to keep the pond clean, leading to believe that humanity must be destroyed to keep it clean.