Okinawa's isolated island of Iwado has seen a growing movement advocating a return to an autonomous government. Fukai Ao, a 13-year-old boy with a missing father, lives on the island with an old doctor named Toshio and is about to enter middle school. Ao's mother was taken away a decade ago by unknown individuals. Arata Naru, Ao's 13-year-old childhood friend, lives with her father, older sister, and grandmother. She has a Yuta power awakened within her due to an incident when she was young.

A mysterious entity called Secret suddenly appears and launches an attack on the Scub Coral life form on the island. In his fervent desire to protect the island, Ao launches a military FP called Nirvash aboard a Japanese military transport.

Source: ANN

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Prequel: Koukyoushihen: Eureka Seven
Side story: Eureka Seven Ao: Jungfrau no Hanabana-tachi
Other: Aratanari Fukaki Ao
Sequel: Eureka Seven AO Final Episode: One More Time - Lord Don't Slow Me Down