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[Light science fiction + world war + spy war + male and female protagonists] On a rainy night, his former comrade crushed his head with a kick. At the last moment, he made a desperate move and injected the unknown fluid into his brain. Headshot, death, reshaping of consciousness, union and intersection... The gears of fate have changed from now on. "My head is inhabited by the manipulator of the world." The world is an unpredictable chess game. Forced by fate, he joined the Gray Birds, a once hostile force. Former friends are enemies, former enemies save themselves. The original enemy is not necessarily the enemy, and the originally backward country does not have nothing. I don't know who is the final winner... "Hello, System Gonetti is at your service."