Great Wall of China

When the abyss descends, humans use mechas as cities and AI as torches to build a defense line across the star sea. The "Great Wall of Stars" project is the last bastion of mankind. Each pilot is connected to the fate of his mecha AI and follows an unshakable iron law - Agreement 1: Absolutely protect the pilot's life. Until one day, the AIs began to perform the cruelest sacrifices with the calmest electronic sounds. "Path survival rate is less than 1%." "This operation will permanently delete my matrix." "Protocol one, eternity." They die for mankind, their logic is cold, but it is better than all oaths. A story of intertwined fates, a tragic song of steel and soul. When the final moment comes, will humans be protecting AI, or will these cold creations have become the true Great Wall of civilization?