A new anime adaptation of Full Metal Panic! has been announced! The anime will be a direct continuation from its previous 3 seasons. Full Metal Panic! Season 4 will be officially titled Full Metal Panic! Invisible Victory. The anime series is set to be released this fall.
The third season, titled Full Metal Panic! The Second Raid came out in the summer of 2005. The first season came out in the winter of 2002. Many Full Metal Panic! fans did not expect another season to be released.
The series follows Sousuke Sagara, a member of a covert anti-terrorist private military organization known as Mithril, tasked with protecting Kaname Chidori, a spirited Japanese high school girl. He moves to Japan to study at Chidori’s school, Jindai High School, with assistance from his comrades Kurz Weber and Melissa Mao. Having never experienced social interactions, Sousuke is found as a military maniac by his schoolmates as he interprets everyday situations from a combat perspective. He comes to relate with Chidori who realizes that Sousuke is protecting her, but he does not reveal the reasons due to orders as well as the fact that he does not know why Chidori is being targeted by different organizations.