FLCL is a post world war two series in which post atom bomb Japan (Naota) had to come into terms with one major decision, accept the intruding American culture (Haruko), accept tradition and hold a chance that another atom bomb might hit (Mamimi) or come into terms that something must be changed but without giving up their roots (ERI) while attempting to fend off the influence that the American army bases and intruding Industrial America, (Medical Mechanica) held within Japan.At first it is a grudgeful acceptance of American culture for new japan is unaware of America's intentions as they help selling them things required in order for them to rebuild while all the adults can do is complain that America is intruding in their territory (Adults complaining about Medical Mechanica in Episode 1