Emoniichuan

One of the more unusual Jusenkyou effects, Emoniichuan grants the blessing commonly referred to in the colloquial as demoness. Despite this name and the appearance granted, typically that of a woman with horns, bat-like wings, and a devil's tail, it is not actually associated with Hell or evil in the native mindset; it is in fact likely that the current name for the spring is derived from the legends of immigrating peoples, and the spring should truthfully be called Bianfunyanniichuan, or 'Spring of Drowned Bat-girl'.

Folklore

In fact, Emoniichuan is closely associated with the goddess Zokutou who governs over time and the realm of things between. In particular, she is strongly connected to the time between death and rebirth; some Yuribans believe that this spring is connected to her because of the loose correlations between the appearance of the created 'demoness' and bats, whose nature as flying mammals place them between the realms of earth and sky.