Completed
“Cyborg warrior Sonnet monitors Lan, whose Crimson Fang power threatens both their humanities.”
Blue Sonnet
紅い牙 ブルー・ソネット
6.1
10,111 rank · 3,787 viewers · 1 favorites
Action
Drama
Sci-Fi
Super Power
Shoujo
Would You Love or Hate This?
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Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
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Synopsis
Cyborg warrior Sonnet monitors Lan, whose Crimson Fang power threatens both their humanities.
Sonnet is a cyborg/esper from a harsh background and now trained to be the ultimate warrior and most powerful weapon in the world. She is sent to Japan to watch Komatsuzaki Lan, who is thought to be controlled by the rage of the esper Akai Kiba (Crimson Fang). Lan is a quiet girl who knows she's different from everybody else and starts to show signs of Crimson Fang after coming into contact with Sonnet. In the course of fighting with Lan, Sonnet starts to rediscover her humanity. At the same time Lan has to fight to retain her humanity and control the Crimson Fang. (Source: ANN)
What people say
Community consensus
Derived from 4 sampled reviews
4.5
/10
What 4 viewers settled on.
33%
recommend
Score distribution
median 4
mode 3
σ 1.66
Agreement
Mostly aligned
σ 1.66 · some divergence
The polarity gap
4.0 pts
Recommenders 7.0 · others 3.0
Yes
No
Score over time
↓ 0.50
Running avg · Apr 2013 → Nov 2025
Snap verdicts
· shortest highly-rated reviews
- 7 “No, this is not a bad anime. Keep on reading if you want to know why. I feel obliged to comment to clean the reputation of a jewel from a bygone era. Starting with the characters, strong girls were...”
- 3 “Low-budget, boring, and very campy. There are a couple action scenes that would make for a cool looking trailer but, sadly, that's the only thing of value here. The seriousness of the show is...”
- 5 “Utterly average and despite all the gory violence and action, boring. PLOT: Well to be honest I wasn’t really expecting much from this series when I read the synopsis, so I was actually surprised...”
Verbosity
Short · 25%
Medium · 50%
Long · 25%
Watch Order & Related
Explore the Blue Sonnet universe
Cast
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See all →Made by
See all credits →Production slate
- Format 5 × 29′ eps × min
- Total runtime 2h 25m all episodes
- Aired Jul 1989 – Jun 1990
- Source Ova media type
- Rated R+ Mild Nudity
- Ref. BS-1872 catalog
Produced by
- Tatsunoko Production Producer
- Walkers Company Producer
- Nippon Television Music Producer
Licensed by
- Central Park Media Licensor