The Coral Cave is a 2D point-and-click adventure game. 
The characters and backgrounds are painted in watercolor and hand-animated on paper.

 

Mizuka, a little Japanese girl, lives on a small remote island, in the Okinawa archipelago.
One night, she has a strange dream. When she wakes up, a terrible danger is threatening the island. Mizuka must explore the surroundings and enter a mysterious spirit world in order to save her village.