The Water Dragon's Bride Vol. 1 (manga)

A modern-day girl gets whisked away to a strange land where she is sacrificed to a water dragon god!  

In the blink of an eye, a modern-day girl named Asahi is whisked away from her warm and happy home and stranded in a strange and mysterious world where she is sacrificed to a water dragon god! What plans are in store for her, and what will happen when she comes face to face with this god? 

A young boy named Subaru comes to Asahi’s aid, but despite his help, Asahi must endure a test of survival! Will she be able to make it out alive, or will she end up being sacrificed?