The male protagonist with blue hair will be named Fukai Ao (フカイ·アオ, which means "deep blue" in Japanese), a 13-year-old boy. Ao's father, Renton Thurston (レントン·サーストン), is missing, and his mother, Eureka (エウレカ), was taken away by the US military 10 years ago. Because he inherited his mother's special genes, he can see things that the human eye cannot see, such as light particles with a particle size of 20nm, infrared rays, ultraviolet rays, etc. (but this special physiology is limited in outer space). When he was a child, he lived with the old doctor Fukai Toshio in the clinic, and is now in Generation Blue. The name of the heroine will be Arata Nalu, also 13 years old, and is a childhood sweetheart who grew up with Ao. Naru's eyes with the power of "Yuta" (Yuta is the name of a psychic in Okinawa, Japan who is a fortune teller) were awakened due to an accident in her childhood. Naru has the special ability to understand the inner voice of Coral Rock, because a part of Coral Rock grows in her body, and to some extent, she and Coral Rock are partially fused, but it is precisely because of this that she has been weak since childhood and needs to put oxygen into the oxygen respirator in her hand. Now she lives with her father, sister and grandmother. The stage of this work is also set on Iwato Island in Okinawa. At that time, Iwato Island was carrying out the autonomy restoration movement, but one day, the Coral Rock that appeared on the island was attacked by its nemesis, the white blood cell G-Monster. In order to protect Iwato Island, the male protagonist Ao met the humanoid IFO (Intelligent Flying Object) and the story of fighting against the G-Monster began.