Patarillo! is set in a society much like ours in most ways, with one decided twist. The manga on which it is based is one of the much-read works produced for adolescent Japanese girls that features a healthy proportion of gay men and beautiful teenagers aka bishounen (beautiful boys). Most of the action takes place in Marinera, the land of eternal spring, located somewhere in the South Seas. The country is a major producer of diamonds; they provide much of the basis of conflict in the anime series. They come from one of the most prolific mines in the world, owned by the king of Marinera, the vertically challenged but horizontally endowed boy-king Patarillo himself. The International Diamond Syndicate - a huge semi- criminal organization/ secret society dedicated to taking over the world`s entire diamond supply- wants that mine and will stop at nothing to get it. In the early episodes they send off a number of bishounen assassins to do in Patarillo, which necessitates his having a bodyguard, the English MI6 agent, Major Jack (`Bishounen-Killer`) Bancoran. Bancoran`s nickname doesn`t mean he shoots bishounen in cold blood. The soubriquet comes from the fact that no male under the age of 17 can resist his sexual fascination. This, to Bancoran`s eternal disgust, includes Patarillo himself. The action switches often from Marinera to MI6 headquarters in London (London seems to be an easy two hour`s flight from the South Seas) or Bancoran`s palatial condo in the suburbs of same. (MI6, be it noted, looks a lot like Fritz Lang`s Metropolis, while Jack`s `apartment` bears a passing resemblance to Randolph Hearst`s spread.) The action also goes into the past and future and out into space. Patarillo evidently gets around.

Fine and Rein are sent to the Royal Wonder Academy on the Royal Wonder Planet in order to study to become better princesses. They plan to make many friends, but unfortunately, the competition and cold nature of the students and teachers make things impossible. The twins also become Universal Princesses when touching the legendary Soleil Bell, releasing two angels named Pyupyu and Kyukyu to help aid them. Unfortunately, an evil force manifested in a painting doesn't seem to be satisfied about the Universal Princesses...

After the events of the 1st series, Fenarinarsa continues to drift from Earth, so the King asks for help from the kingdom, Marinarsa, to send their daughter, Momo (Who is identical to the 1st one) to Earth to regain humanity's faith in their dreams.

Memoru is one of 245 people who came to earth from the Riruru Star when their ship had an emergency crash-landing on earth. Memoru's people have such tiny bodies that they could stand on a human's palm. One day she hears lovely music, and she follows its source and comes upon a huge house she hasn't seen before to find a girl taller than her playing on the piano. Memoru visited her again secretly with her friends Popitu, Rupangu, and Pi, but the human girl, Marielle, seemed sick and likely to die any moment. Feeling sad for the girl, Memoru's tear drops on the girl's lips. The girl gets better and a strong friendship starts between them. (Source: ANN)