"That's a UFO! The flying saucer" (これがＵＦＯだ！ 空飛ぶ円盤) is a Japanese "documentary" about unidentified flying objects. It was first screened in 1975 at the annual Toei Anime Festival hosted by the famed Toei Animation studio, creators of Sailor Moon and Dragon Ball. The short film features classic UFO encounters like the Betty Barney Hill abduction case of 1961 and the 1948 story of Kentucky Air National Guard pilot Captain Thomas F. Mantel whose plane crashed while he chased a UFO.
Watch this far-out Japanese animated "documentary" about UFOs (1975)