Endless blue sky and the shining sun.... There is a small southern island. Ryou and Kanade are childhood friends, who have grown up on the island. They are like brother and sister, but Ryou gradually starts to love Kanade. One day, he tells her that he loves her. But she says, "I'm leaving this island after graduating high school, and never coming back." When he is depressed, he meets a beautiful girl, Saina. According to her, she is a legendary princess of the island. She asks him to get back the special coral to break the seal. He is skeptical at first, but she tells him that she will make his wish come true, if he breaks her seal. He finally accepts it because he doesn't want to separate from Kanade.... When he wakes up, he finds himself lying in front of a small shrine. It seems nothing has changed.... It must have been a dream.... But he finds her kiss mark on his index finger.... [Edited from Himeya Shop]