At Binan High School in the city of Binan, Japan, Yufuin En and Kinugawa Atsushi, along with along with Naruko Io and Zaou Ryuu, enjoy leisurely high school lives while hosting meetings of a do-nothing club called the Earth Defense Club.
Please, teach me everything there is 
to know about Earth culture and customs!
Bitte lehrt mich alles, was man über die
irdische Kultur und Bräuche wissen kann!
¡Por favor, enséñenme todo sobre la 
cultura y las costumbres de la Tierra!
¡Por favor, enseñadme todo sobre la 
cultura y las costumbres de la Tierra!
Je veux découvrir
tous les us et coutumes !
Per favore, insegnatemi tutto quello 
che c'è da conoscere sugli usi e costumi della Terra.
Por favor, me ensinem tudo sobre
 os costumes e a cultura da Terra!