Two years after the story of "Ruri no Island" aired in April 2005.

Ruri ( Nariko ), a second-year high school student who has been living and growing up on the island, heard from Ruri's class teacher that Miyahara suddenly moved to the island with her son Shion ( Kamiki Ryunosuke ), who is the same age as Ruri. This is an exciting story about Ruri’s first love and the residents involved in change. There are blue seas, beautiful coral reefs, and Ruri’s growth story.