Tells the same story as Full Metal Panic Second Raid and is as such, also based on the novels The End Of Day By Day. Leaving off after the original series, this series tells of Sousuke and Mithril as they fight Amalgam. Like the original series, but both sides have gotten a bit more aggressive...
Their new mission… is to peacefully raise a family!? *Full Metal* returns! A thrilling new series begins! "I'm going to need a weapon. They're in the closet. Go get them." 20 years after the climactic battle for the fate of the world, Sousuke Sagara is married to Kaname Chidori and they are living a peaceful life together. "Dad, you want your usual carbine and grenade?" "You're still hiding a stash!? Every time you say, 'I don't need weapons!'" "Mama, the enemy is coming. You can complain later." Their daughter Natsumi is a high school girl who matches her father's fighting prowess, and their son Yasuto, an elementary school boy, is a skilled hacker. Now that they have joined the family business, the word "peace" is no longer in their dictionary.......!? A brand new series depicting the exciting daily life of the Sagara family! (Source: Fantasia Bunko, translated)

