The City in the Sky

The Agency rescues young orphans and raises them to be soldiers to protect Zephyr, the city in the sky. Agent 5441, or Dylan as he will soon find out, is about to have his world turn upside down. He was out on an easy mission with one of his squad members, Agent 5447, who was his closest friend. The two of them grew up together in The Agency. They would train together, sit together at meals, and always went on missions together. However, the two of them became closer than what was recommended by The Agency's policy, because the agents' lifespans are so unpredictable. Until one day, they were out on a mission when The Traitor, a wanted fugitive, killed Agent 5447. The Traitor had no name, no other information besides an old agent number and a nickname given by the others, it was just another target to take out. So 5441 takes it upon himself to not only apprehend the target but also get revenge for Agent 5447, his friend. However, when he finds The Traitor, things don't quite go to plan.