ウルトラQ
is a Japanese "tokusatsu" science fiction television series produced by Tsuburaya Productions. The fourth entry in the Ultra series, the series aired on Tokyo Broadcasting System from April 2, 1971 to March 31, 1972. It became successful enough to inspire a second ""Kaiju" Boom" in Japan, with rival studios producing their own "tokusatsu" shows and Tsuburaya Productions producing additional Ultraman shows annually for the next three years. Prior to the series' release, "Ultra Q", "Ultraman", and "Ultraseven" were stand-alone titles however, "Return of Ultraman" is the first installment to unite the first three shows into an interconnected universe.