生贄にされた赤ん坊が偶然子供を失ってしまった猿人に拾われ成長しますが、その猿人、あるいは、育ての親が肉食恐リュウのチラノに殺害されたことでチラノへの復讐を誓うと同時に、生みの親を探す旅に出るストーリーが 本作・原始少年リュウです。 <br /><br />(For Non-Japanese Viewers) <br />When you watch the video, please click the Gear icon "⚙ "in the top-right corner of the screen to access the subtitle options, then select your language if available. <br /><br />The story of this work, Ryu the Primitive Boy, follows a baby sacrificed as an offering who is accidentally found and raised by an ape-man who had lost his own child. When that ape-man—or foster parent—is killed by the carnivorous dinosaur Tyrannosaurus, the boy vows revenge against the Tyrannosaurus while simultaneously embarking on a journey to find his birth parents.
