Takeoff (離陸) is the 16th chapter of the manga series.
After a few days of construction, Ishii's plane is completed and ready to takeoff. Ishii has seen other cites from her telescope and plans to fly to the next city. Ishii manages to take off but the plane falls apart while in the air. Even though the take off failed, Ishii felt happy because she doesn't need to worry anymore. She is last seen parachuting out the the plane and drifting to the lowest levels of the city.