Full Metal Panic! Novel Series by Shouji Gatou, Shikidouji

Jindai High School was a relatively safe place, right up until Sousuke Sagara transferred there. A total nut, he wreaks havoc on the school's student body and gets into a world of trouble with the teachers! But there's more to Sousuke than meets the eye--not just a hell-raising student, he's actually a member of an elite military unit, on an undercover mission to protect the beautiful schoolgirl Kaname Chidori from the KGB... moreJindai High School was a relatively safe place, right up until Sousuke Sagara transferred there. A total nut, he wreaks havoc on the school's student body and gets into a world of trouble with the teachers! But there's more to Sousuke than meets the eye--not just a hell-raising student, he's actually a member of an elite military unit, on an undercover mission to protect the beautiful schoolgirl Kaname Chidori from the KGB. Discover the mystery as this comedy-action-science-fiction story unfolds! less

When Kalinin and Tessa investigate the capture of a suspected terrorist by the Japanese governement, they expect the procedure to be routine, but find it's anything but! Then, when Tessa turns to Sousuke for help, a seemingly jilted Kaname only increases the drama quotient. And the threesome's problems grow exponentially when they learn about the existence of a mammoth AS known as Behemoth, with which the terrorists plan on destroying the city... Will it be "sayonara Tokyo"?

While on summer vacation, Chidori Kaname is invited to an island in the pacific by Sousuke Sagara, the world's biggest war nut. She is really excited--until she finds out Sousuke isn't planning a relaxing tour of nature, but a high-speed adventure full of thrills, chills and danger! She can't even unpack her swimsuit before a chemical weapons facility falls down around her, having been attacked by a scarlet-colored steel demon named Venom.. moreWhile on summer vacation, Chidori Kaname is invited to an island in the pacific by Sousuke Sagara, the world's biggest war nut. She is really excited--until she finds out Sousuke isn't planning a relaxing tour of nature, but a high-speed adventure full of thrills, chills and danger! She can't even unpack her swimsuit before a chemical weapons facility falls down around her, having been attacked by a scarlet-colored steel demon named Venom...The adventures continue in this high-stakes volume of Full Metal Panic! less