第 3 集: 小原鞠里向千歌發起挑戰，要她湊齊人數以獲得社團批准
2016年7月16日 播出
We meet Mari Ohara, who makes a deal with Chika and the others. If they can fill the school gym during their first performance, she'll approve their club despite their numbers. Will they be able to gather enough people? (Source: FUNimation)