The premise is simple. You follow the days of Sergeant Maritan, a Drill Instructor of um… the U.S. Marines? Well, yeah. Apparently, Maritan is actually a Princess from the Magical Kingdom of Paris Island, which has signed a treaty of co-operation and friendship with the Great United States of America. God bless America. Maritan usually goes around abusing training raw meat recruit Army-tan, under the supervision of Lieutanent Commander Navy-tan. There’s a GA-tan somewhere near the end too, a meganekko attached from the Self Defence Forces, it seems.

The US military is to use manga-style comics to teach Japanese children about the two countries' security alliance. Four comics featuring a Japanese girl and a visiting US boy. In it the young girl, Arai Anzu - which sounds like alliance when pronounced by a Japanese person - asks the boy, Usa-kun - a play on USA - why he is protecting her house. "Because we have an alliance," he says. "We are 'Important Friends'." "It's good to have a friend you can rely on to go with you," the little girl concludes.