There are two choices, depending on which of them is the "real world". * Okay, so we know that Gekiganger 3 was made prior to Nadesico's plotline, so the only thing we need to explain here is how the Gekiganger pilots can be fans of Nadesico, which seems to be airing concurrently with the events of Gekiganger. The answer? Nagare Akatsuki is a fan of Gekiganger (or, more likely, is a former fan; that would explain his constant taunting of Akito) and used the mentions of Nadesico as the foundations for Nergal's battleship. * Nadesico airs during the events of Gekiganger; the producers slipped in all of the references to Gekiganger as a tip of the hat to the giant robot defending Earth.