Called “Juggernaut,” these are the unmanned combat drones developed by the Republic of San Magnolia in answer to the attacks by the autonomous unmanned drones of the neighboring Empire of Giad, the “Legion”. But they’re only unmanned in name. In reality, they are piloted by the Eighty-sixers—those considered to be less than human and treated as mere tools. Determined to achieve his own mysterious ends, Shin, the captain of Spearhead Squadron, which is comprised of Eighty-sixers, continues to fight a hopeless war on a battlefield where only death awaits him.
"The Republic of San Magnolia fights a safe humane war using drones. In reality, however, the drones are piloted by humans called 86s, who are called \u201cpigs\u201d and considered less than human."
"Spearhead is given orders to undertake a pointless march into enemy territory, and not to stop until they're dead. Lena tries her best to stop this suicide mission from happening."
"The members of Spearhead are reunited as a massive Legion offensive looms. With the next deadly phase of the war almost here, how will they spend their remaining hours?"
"The Legion's large-scale offensive begins, and the Spearhead crew are sent into the thick of the fighting. But even back at base, there's no safety to be found..."
"The team prepares for a final suicide mission against \"Morpho,\" a massive railgun Legion capable of single-handedly turning the tide of the battle."
"The operation to destroy the Morpho was a success, and Shin and his team fulfilled their promise to return to the Federacy alive. After enjoying a brief respite, they once again wished to serve in frontline units, but they received a certain notice from Ernst. After crossing the deadly battlefields of the Republic, they arrived at a new meeting in the Federacy. They fight, suffer, and see a ray of hope. This is a story of boys and girls who have begun to move little by little. At the end of their journey, what is reflected in their eyes?"