They are bright silver and disk shape. They are too fast. It seems that they play around there. Its vertical and horizontal movement isI saw UFOs in the sky, which are much higher than a airline in terms of altitude. The shape of UFO is the combination of two hemispheres up and down with a dish between them. The radius of dish is twice of that of hemisphere. I guess that it is the typical UFO shape. Its color is bright silver. It seems that they play around there. They flight up and down so easily and in curved path. In addition to that, the smooth and sharp curves are observed in the path of the UFO. They disappear and appear in the sky. The speed of UFO is amazing. Since I saw the flight in the sky, I can compare between the UFO and the airline. I can tell that the UFO can flight at least several times faster than the airline. I think there are at least more than 10 UFOs. The maximum number of UFO in my camera at the same time was 7. Since there was no cloud in the sky and they were in the high altitude, it was not easy for people to observe it. I don't think other people observed them. I asked one of my friends to see that. He was taking a nap at the moment. He missed it. When I moved to the other place to get a tripod, but I could not observe them for the brightness from the sun. My apartment has a door to the east. Because of appropriate shield, I could find them. They were above me and a little bit in the east.