Shunyanniichuan
Shunyanniichuan is one of the Jusenkyou Springs, and more specifically, one of the four commonly referred to as the 'Elemental Girls'. This group of four includes Yuanquannyannichuan, Yannyanniichuan, and Kongqinyanniichuan as well. Shunyanniichuan is the Spring of Drowned Dryad, which means that it grants those that bathe in it plant-like characteristics.
Folklore
As the dryads are said to be favored by Akibimi, Shunyanniichuan is considered to be her totem spring.