Ikenie Shoujo wa Oyama no Akujin ni Mederareru

One day, in a village that worships an evil god, a solar eclipse occurs. A girl "redhead" who was hated because of her red hair is offered to an evil god as a sacrifice. On the day of the ceremony, the girl throws herself into a waterfall and is rescued by the evil god Akira. Akira begins to dote on the girl who became a divine messenger ... * This work contains the same content as "The sacrificial girl is loved by the evil god of the mountain

https://www.cmoa.jp/title/303789/