|Eureka Seven consists of fifty episodes which aired from April 17, 2005, to April 2, 2006, on the Mainichi Broadcasting System and Tokyo Broadcasting System networks. Almost all of the show's episodes are named after real songs, composed by both Japanese and foreign artists.
The series focuses on Renton Thurston, the fourteen-year-old son of Adrock Thurston, a military researcher who died saving the world. He lives what he considers a boring life with his grandfather in a boring town. He loves lifting, a sport similar to surfing but with trapar, a substance abundant throughout the air, as the medium. He dreams of joining the renegade group Gekkostate, led by his idol Holland, a legendary lifter.
An opportunity to do so literally falls into his lap when a large mechanical robot, called the Nirvash typeZERO, and Eureka, its pilot and a member of Gekkostate, crash into Renton's room. Renton's grandfather orders him to deliver a special part to the Nirvash called the "Amita Drive", which releases the immense power dormant within the typeZERO called the "Seven Swell Phenomenon". Afterwards, Renton is invited to join Gekkostate, where he quickly discovers that the behind-the-scenes life of Gekkostate is hardly as glamorous or as interesting as printed in the glossy pages of their magazine, ray=out. Only one thing makes it all worthwhile for him: the presence of Eureka, the mysterious pilot of the Nirvash. Renton, Eureka, and the Gekkostate embark on an adventure that will shape their future as well as the world's.
Eureka Seven works on a wide variety of themes throughout its story. One of the most obvious themes in the series is racial integration, presented via the relationships in the series, e.g. Renton's with Eureka, who is not entirely human. Religious tolerance and harmony is presented in the characters' relationships and also the series' conflicts. Allegories of real world conflicts and wars, current political climates from Japan and abroad, depictions of surf culture and other subcultures and related musical movements that span several generations, and ties to environmental movements. The series also covers other more personal themes such as parenting, and family, along with a very innocent view of puppy love/love at first sight from Renton and Eureka. Personal identity and protection play a huge role for Renton and Eureka, as both of them say, "I am me" in the series multiple times, and Renton has sworn to protect Eureka. Continuing with themes addressed in previous series, responsibility and guilt manifest most explicitly with repeating the phrase, "You're going to carry that weight." The series works these themes, as well as the theme of growing up and change, into the journey of Renton Thurston.