8화: 쇼코와 루리가 수질을 조사하고 버려진 공장에서 오렌지 결정체를 발견한다

8

Shoko, whose shirt commemorates nihonium, explores water quality for her school science project. Ruri wants in on it. Between samples, Shoko finds and then loses an orange crystal. Yoko checks water quality as well, using it to locate a new fluorite deposit. More water tests lead the investigators to an abandoned factory. Inside, they find rare orange zincite. It serves as a pretty decoration and a symbol of Shoko's and Ruri's friendship. (Source: Wikipedia)