第 3 集: 北宇治學生以女僕咖啡廳為主題，為文化祭做準備。
Kitauji's cultural festival is approaching fast, and Kumiko, Hazuki, and Midori's homeroom class is hosting a maid cafe. Midori dresses in a far too large costume, which is met with criticism from Kumiko and Hazuki. Midori argues "bigger is better", and the three go back and forth on the topic. Midori states that someday she might have a more mature body like Reina, and though Kumiko says it's too late, Midori says she hasn't given up hope. Reina enters the classroom, explaining she heard Kumiko would be wearing a maid outfit. Midori convinces Reina to wear a maid outfit she borrowed, stating it is her one and only wish. Reina feels embarrassed, though Hazuki and Midori compliment her look (specifically her breasts), while Kumiko remarks on their tendency to talk about them. (Source: Hibike! Euphonium Wiki)