The exclusive Eiken club remains a mystery to many of the students at the Zashono Academy. Shy new pupil Densuke wants to participate in extracurricular activities, and is surprised to learn that he has been selected to join Eiken. Even more surprising is that the club seems to be composed entirely of the bustiest girls on campus! All of the girls compete for the bewildered Densuke's attention, but the only girl that interests him is Chiharu. Romancing his love proves difficult, however, as the other girls cause constant trouble and land Densuke in a series of embarrassing and compromising situations. EIKEN combines the schoolyard comedy and Ecchi sex-farce genres and is directed by Kiyotaka Ohata, assistant director of THE SUPER MILK-CHAN SHOW.