Mars Red

MARS RED

6.0(1)

OtakuDen

6.6(38,820)

MAL Score

Ranked #7471

Popularity #1967

Action
Supernatural
Adult Cast
Historical
Military
Vampire

Episodes: 13
Duration: 23 min per ep
Aired: Apr 6, 2021 to Jun 29, 2021
Status: Finished Airing

Synopsis

In 1923 Tokyo, a sudden surge of vampires throws the capital into turmoil, fueled by the illicit spread of “Ascra,” an artificial substitute for blood. Lieutenant General Sounosuke Nakajima responds by assembling Special Forces Unit 16—vampires already within the military—into a covert task force created to hunt their own kind: Code Zero.

Colonel Yoshinobu Maeda is placed in command and charged with tracing the Ascra pipeline while capturing or eliminating vampires before the situation spirals further. As scrutiny mounts and the unit’s existence is questioned, Code Zero’s members wrestle with unfamiliar abilities and the loss of their former humanity. With enemies on all sides, they must contain the outbreak—or be consumed by the darker instincts awakening within them.

Otaku Consensus

Mars Red lands as one of Spring 2021’s more divisive genre pieces: its Signal.MD visual presentation, period atmosphere, and theatrical acting give it a distinct identity among vampire anime. The verdict is that its mood and design work outclass its plotting; the most consistent criticism is a confusing, sometimes directionless middle stretch where major character focus and narrative momentum feel uneven.

Why You Should Watch

Watch Mars Red if you want vampire anime filtered through military bureaucracy, early-modern Tokyo mood, and adult regret rather than tournament escalation or gothic excess. It scratches part of the Hellsing itch through its soldier-vampire tension, but trades bombast for subdued tragedy, coded conversations, and stage-like dramatic pauses. Viewers who enjoy historical urban fantasy with a primarily adult, primarily male cast will get more from it than anyone seeking clean action payoff every episode. Its appeal is in the texture: Signal.MD’s polished period visuals, the emphasis on chain-of-command pressure, and a mystery structure that asks you to sit with implication. If you can tolerate uneven plotting for an anime with a rare vampire-military-historical flavor, this is the kind of flawed cult title worth investigating.

Key Characters

S
Sounosuke Nakajima
Nakajima is compelling as the institutional face of the series, turning supernatural horror into a question of military policy, secrecy, and state control.
Y
Yoshinobu Maeda
Maeda is discussed by viewers as a restrained commander whose presence, absence, and emotional distance shape much of the show’s uneasy rhythm.

What Makes It Stand Out

1
The anime was produced by Signal.MD, and its reception consistently singles out the visual side as a major strength even among viewers who were frustrated by the writing. AniList’s CGI tag sits at 64%, reflecting how noticeable digital compositing and CG-assisted presentation are to the show’s identity.
2
Mars Red is built around an unusually specific tag combination: Vampire at 95%, Military at 78%, Historical at 76%, and Primarily Adult Cast at 79% on AniList. That places it closer to adult urban-fantasy period drama than to the teen-school vampire template common in anime.
3
The creative chain is unusually design-forward: Bunou Fujisawa is credited with the original story, Kemuri Karakara with the original character designs, and Yukari Takeuchi with the anime character designs. That separation helps explain why the series has a strong illustrated identity even when its narrative clarity is debated.
4
Junichi Fujisaku’s series composition became a major dividing point in reception. Positive first-impression reactions praised the hint-based mystery, while harsher reviews criticized the same structure as lacking clear direction.
5
The visual atmosphere is reinforced by a two-person art direction credit, Hiroshi Katou and Hirofumi Sakagami, alongside Mitsuko Sekimoto’s color design and Hidenori Manaka’s photography direction. Those staff roles are central to the show’s reputation as a stronger aesthetic experience than its MAL score suggests.

Fun Facts & Trivia

Fun fact 1: Mars Red began from Bunou Fujisawa’s original story rather than a conventional long-running manga or light novel pipeline, which is one reason the anime’s pacing feels closer to theatrical drama than serialized battle fiction.
Fun fact 2: The TV anime ran for 13 episodes from April 6, 2021 to June 29, 2021, placing it squarely in the Spring 2021 season that many fans later described as crowded and easy for mid-tier originals to miss.
Fun fact 3: Its reception split is visible in the numbers: MAL lists it at 6.58 from 38,717 votes and rank #7412, while AniList records a similar 63/100 score but 431 favorites, suggesting a small audience that connected strongly with it.
Fun fact 4: English-language reactions repeatedly frame the show as underrated or a hidden gem, but even favorable discussion tends to separate admiration for its art and acting from frustration with the plot’s clarity.
Fun fact 5: The original character design credit belongs to Kemuri Karakara, while the animation character design credit goes to Yukari Takeuchi, making Mars Red a useful case study in how anime adaptations translate a pre-existing design sensibility into TV production.