Eureka 7

Eureka 7 isn't a band it is a tv show (aka Psalms of Planets Eureka seveN. Eureka 7 tells/shows the story of a kid named Renton Thurston and the outlaw group he joins: Gekkostate, his relationship with the Nirvash pilot Eurek and the secrets of the Coralians. So in other words Eureka 7 didn't write these songs they were just used on the show.