Sergeant Sousuke Sagara returns to Jindai High School to shield the invaluable war asset, Kaname Chidori, from any danger. Yet his poor social aptitude and lack of everyday experience spawn humorous yet perilous scenarios, threatening the tranquil school life Kaname desires. While Sousuke keeps bringing an array of armaments to campus as a way to neutralize threats—real or imagined—Kaname battles to carry out her responsibilities as vice‑president of the student council and the school's social events while restraining him.
To guarantee mission success, Sousuke is sometimes compelled to don the outfit of a popular amusement‑park mascot named Bonta‑kun. Leveraging his technical know‑how, he eventually converts the lively costume into a state‑of‑the‑art exosuit that suffers only one flaw: the voice‑translation module can utter solely "mofu."
Full Metal Panic? Fumoffu follows Kaname and Sousuke as they strive to enjoy ordinary school life and their daily routine amid the havoc they unintentionally generate, in the process.
Kyoto Animation Japan