第 4 集: Escha 試圖複製她的人工尾巴，出於理解創造了該尾巴的已故母親的渴望。

4

By suggestion of her friends, Escha attempts to make a copy of her artificial tail, but despite being a profitable opportunity, she is more interested in doing so to learn more about her late mother, who created it for her. (Source: Wikipedia)