YuruYuri: Happy Go Lily Season 1 Episode 10 What in the World Have We Learned in Our School Trip, I Wonder ( Air Date 2011-09-06 ) Genre Animation, Comedy category. Overview "Kyoko and Yui, along with Ayano and Chitose, go on a school trip to Kyoto, where they explore the town, have a bath together and engage in a pillow fight.".