Laid-back high school student Nagi Saejima wakes up from a doze to find herself in a lake in another world!? He heals those who suffer from illness with the power that dwells within himself. One day, Nagi is led by a voice calling for her help, and she is summoned by a boy. That encounter will change Nagi's destiny greatly.
Isekai De Mizu No Dai Seirei Yattemasu. (manga) Chapter 15
Isekai De Mizu No Dai Seirei Yattemasu. (manga) Chapter 16