National Contract, My Contract Object Is an Aerial Gunship

Traveling to a different world where everyone has a contract, during the awakening ceremony, he only contracted a scrap-iron map and became the laughing stock of the whole hospital. He was even thrown into the cannon fodder unit by his old enemy to fend for himself. But no one knows that this map is a disguise, and its true identity is [World Coordinate Strike Terminal]! When he tapped the map - the AC130 aerial gunship tore up the sky and covered the ground with devastating firepower! Since then, the battlefield has changed. Swarm Commander? A 105mm howitzer clears the target! Did the nobles set a trap to kill him? He backhandedly summoned the "Iron Eagle" to attack the destroyer, airdropped the Alpha robot team, and turned the enemy into scorched earth along with the conspiracy! Behead the insect king and reverse the situation of the war. One person is a natural disaster-level army! But what was more terrifying than the rapidly evolving Zerg was the game played by the imperial nobles, which pushed him to the center of the chessboard again and again. Ryan watched with cold eyes and used his absolute strength as a bargaining chip to declare to the whole world: "I am the rule."