Ryuu
main character
TV
5.7
My TrackerPLANNING
Episode: 0 / 22
My Score:
Anime DetailsFINISHED
Format:TV
Episodes:22
Episode Length:25 mins
Season:FALL 1971
Source:manga
Estimated watch time
9h 10m
⚡ 5 days at 5 eps/day
Tags & Tropes
Shounen79%Male Protagonist79%Estranged Family79%Dinosaurs75%Tanned Skin70%Slavery60%Spearplay60%Survival50%Adoption46%Cult40%
TVFINISHED1971 FALL5.7 / 10 AniList score
Ryu the Primitive Boy
原始少年リュウ• Genshi Shounen Ryuu
Synopsis & Story
When Ryuu is born his tribe tries to sacrifice him to a Tyrannosaurus named Shirano because of the color of his skin. He is however saved by a monkey who raises him as her own son. Meanwhile Ryuu's mother has left the tribe and is out on a quest to find Ryuu. 16 years later Ryuu meets a girl named Ran who was sold to the tribe Ryuu originaly came from. The tribe is not happy to see Ryuu alive and tries to sacrifice him again, this time by burning him alive. Before they can get the deed done the tribe is massacred along with Ryuu's adoptive mother by Shirano. Ryuu then sets out on a quest together with Ran to find his mother and Ran's brother Don.
Trailer
Search YouTubeWhere to Watch Officially
A streaming link is not listed for this title yet.
Featured Cast & Voice Actors
Franchise Universe & Related Entries
Aniphoria guide
Ryu the Primitive Boy: should you watch it?
At a glance
Ryu the Primitive Boy has been poorly received, with an average AniList score of 57/100 — 32% of 296 ratings are 8/10 or higher.
Of the 595 AniList users who started it, 18.7% dropped it, so it is frequently dropped; 384 have finished it.
At about 9 h 10 min in total, plan on one to two weeks at a couple of episodes a day.
Best for viewers who enjoy Adventure, Romance — especially shounen, male protagonist, estranged family, dinosaurs.
Episodes
22 episodes are listed.
Main cast & creators
- Original creator
- Shoutarou Ishinomori
- Music
- Takeo Watanabe
Ryu the Primitive Boy FAQ
- How many episodes does Ryu the Primitive Boy have?
- Ryu the Primitive Boy has 22 episodes of about 25 minutes each, roughly 9 h 10 min in total.
- How long does it take to watch Ryu the Primitive Boy?
- About 9 h 10 min back to back. At two episodes a day it takes 11 days; at one hour a day, about 10 days.
- Is Ryu the Primitive Boy finished?
- Yes. Ryu the Primitive Boy has finished airing — the final episode aired March 25, 1972.
- Is there a season 2 of Ryu the Primitive Boy?
- No sequel is listed for Ryu the Primitive Boy as of October 2026. You can continue the story in the original manga.
- Is Ryu the Primitive Boy based on a manga?
- Yes. Ryu the Primitive Boy adapts the manga by Shoutarou Ishinomori.