Brynhildr in the Darkness (Gokukoku no Brynhildr) is a dark, suspenseful sci-fi thriller that blends elements of mystery, horror, and harem romance. The story follows Ryouta Murakami, a high school student who has spent years haunted by the memory of his childhood friend Kuroneko, who died in an accident while trying to prove the existence of aliens. His life is upended when a new transfer student, Neko Kuroha, arrives at his school, bearing an uncanny resemblance to his deceased friend. He discovers that she is a “magic-user,” a girl who escaped from a secret laboratory where she and others were experimented on and given dangerous supernatural powers.
The series is defined by its core themes: a power system rooted in scientific experimentation and exploitation, where each magic-user’s ability comes with severe physical and psychological costs. The protagonists are profound underdogs—young girls who have been stripped of their humanity and are hunted by the organization that created them. Brynhildr in the Darkness masterfully subverts expectations by presenting what appears to be a typical harem romance and gradually revealing a dark, conspiracy-driven narrative about survival, trust, and the ethical limits of science. It is a series that balances moments of levity with genuine tension and tragedy.
For fans of Brynhildr in the Darkness, finding similar anime can be a challenge. The series occupies a unique space—part sci-fi thriller, part dark mystery, part character-driven drama. Yet, many underrated series share its core DNA: a focus on characters with dangerous powers who are hunted by shadowy organizations, an exploration of the psychological toll of experimentation, and a willingness to subvert the tropes of the harem and action genres. These shows deserve far more attention for their tension, their emotional depth, and their willingness to explore the darker side of power.
Here are 15 underrated anime that capture the spirit of Brynhildr in the Darkness.
1. Elfen Lied (2004)
- Streaming Availability: Crunchyroll, Amazon Prime Video
- Rating: MAL: 7.5
- Episodes: 13
- Studio: Arms
- Notable Staff: Based on the manga by Lynn Okamoto.
Plot Summary: Lucy, a “Diclonius,” a mutant with invisible telekinetic arms, escapes from a research facility where she has been brutally experimented on. She suffers from a split personality, alternating between a childlike innocent and a ruthless killer, while a secret organization hunts her down.
Similarities to Brynhildr in the Darkness: Both are about young women who have been experimented on and turned into weapons, and the psychological trauma that results from such abuse. The theme of innocence corrupted by violence is central to both. The series is graphic and often disturbing, but it is also a deeply emotional exploration of the nature of humanity and the consequences of cruelty.
2. Gunslinger Girl (2003)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.4
- Episodes: 13 (Season 1)
- Studio: Madhouse
- Notable Staff: Based on the manga by Yu Aida.
Plot Summary: In a politically unstable Italy, the Social Welfare Agency takes young girls who have been severely injured or orphaned and transforms them into cybernetic assassins known as “fratelli.” Each girl is paired with an adult male handler, and together they carry out missions of assassination while struggling with their eroding memories.
Similarities to Brynhildr in the Darkness: Both are about young girls who are transformed into weapons by secret organizations, and the psychological toll that such exploitation takes on them. The focus is on the tragedy of their existence and the search for meaning in a life defined by violence. The tone is melancholic and morally complex.
3. Phantom: Requiem for the Phantom (2009)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.6
- Episodes: 26
- Studio: Bee Train
- Notable Staff: Based on the visual novel by Nitroplus, directed by Koichi Mashimo.
Plot Summary: A young Japanese tourist is kidnapped and brainwashed by a criminal organization called “Inferno,” becoming an assassin known as “Zwei.” He is paired with “Ein,” a mysterious girl who has been with the organization for years, and together they must navigate a world of violence and betrayal.
Similarities to Brynhildr in the Darkness: Both are about individuals who are stripped of their identities and rebuilt as weapons by a shadowy organization. The relationship between Zwei and Ein mirrors the bonds between the characters in Brynhildr. The tone is dark, introspective, and morally ambiguous, with a focus on the psychological cost of being a tool for others.
4. Kite (1998)
- Streaming Availability: Not currently available on major platforms.
- Rating: MAL: 6.7
- Episodes: 2 (OVA)
- Studio: Arms
- Notable Staff: Directed by Yasuomi Umetsu.
Plot Summary: Sawa, a young orphan, is forced to work as an assassin by a corrupt detective who killed her parents. She carries out her missions with cold efficiency, but she dreams of freedom and revenge against the man who controls her life.
Similarities to Brynhildr in the Darkness: Both are about young girls who are exploited as assassins by the adults who should be protecting them. The focus is on the psychological trauma of being a child soldier and the desperate desire for liberation. The series is graphic and disturbing, but it is also a powerful and tragic character study.
5. Deadman Wonderland (2011)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.2
- Episodes: 12
- Studio: Manglobe
- Notable Staff: Based on the manga by Jinsei Kataoka and Kazuma Kondou.
Plot Summary: Ganta Igarashi is falsely accused of massacring his classmates and is sent to Deadman Wonderland, a privatized prison that doubles as a theme park. He discovers that he is a “Deadman,” an inmate with a unique blood-based power, and must fight in gladiatorial battles to survive.
Similarities to Brynhildr in the Darkness: Both are about individuals with dangerous powers who are imprisoned and exploited by a corrupt system. The focus is on the struggle for survival in a brutal environment and the search for the truth behind their powers. The series is dark, violent, and full of suspense, with a similar blend of action and mystery.
6. Tokyo Ghoul (2014)
- Streaming Availability: Crunchyroll, Funimation, Hulu
- Rating: MAL: 7.8
- Episodes: 12 (Season 1)
- Studio: Pierrot
- Notable Staff: Based on the manga by Sui Ishida.
Plot Summary: Ken Kaneki, a college student, is transformed into a half-ghoul after a near-fatal encounter with a ghoul, a creature that feeds on human flesh. He must navigate his new existence, torn between his human past and his ghoul nature, while being hunted by both humans and ghouls.
Similarities to Brynhildr in the Darkness: Both are about a protagonist who is transformed into something inhuman and must hide their true nature from society. The focus is on the struggle to maintain one’s humanity in the face of overwhelming circumstances. The series is dark, atmospheric, and full of psychological tension, with a similar focus on the consequences of power.
7. A Certain Scientific Accelerator (Toaru Kagaku no Accelerator) (2019)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.1
- Episodes: 12
- Studio: J.C. Staff
- Notable Staff: Based on the manga by Kazuma Kamachi and Arata Yamaji.
Plot Summary: Accelerator, the most powerful esper in Academy City, is recovering from his injuries while protecting a young girl named Last Order. He becomes entangled in a conspiracy involving dark experiments and a shadowy organization that seeks to exploit the city’s espers.
Similarities to Brynhildr in the Darkness: Both are set in a world where individuals with supernatural powers are exploited by secret organizations. The focus is on the dark underbelly of a seemingly advanced society and the fight against those who seek to use children as weapons. The series blends action with a dark, conspiracy-driven narrative.
8. Zetman (2012)
- Streaming Availability: Crunchyroll
- Rating: MAL: 6.9
- Episodes: 13
- Studio: TMS Entertainment
- Notable Staff: Based on the manga by Masakazu Katsura.
Plot Summary: Jin Kanzaki is a young man who has been genetically engineered to be a powerful being known as “Zetman.” He must use his powers to fight against the “Players,” monstrous creatures created by the same corporation that made him, while grappling with his own humanity.
Similarities to Brynhildr in the Darkness: Both are about individuals who are created or transformed by scientific experimentation and must fight against the forces that made them. The focus is on the ethical implications of creating life and the struggle to define one’s own identity. The series is dark, action-packed, and full of moral ambiguity.
9. Speed Grapher (2005)
- Streaming Availability: Crunchyroll
- Rating: MAL: 7.1
- Episodes: 24
- Studio: Gonzo
- Notable Staff: Directed by Kunihisa Sugishima.
Plot Summary: Tatsumi Saiga, a former war photographer, investigates a secret club where the wealthy indulge in their darkest desires. He gains the ability to destroy anything he photographs after a mysterious encounter, and he must protect a young girl who is at the center of a conspiracy.
Similarities to Brynhildr in the Darkness: Both are about a protagonist who uncovers a dark conspiracy involving the exploitation of individuals with special powers. The focus is on the corrupting influence of power and the fight to protect the innocent. The series is dark, suspenseful, and full of social commentary.
10. Noir (2001)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.3
- Episodes: 26
- Studio: Bee Train
- Notable Staff: Directed by Koichi Mashimo, with music by Yuki Kajiura.
Plot Summary: Mireille Bouquet, a professional assassin, teams up with Yumura Kirika, a young amnesiac girl with incredible killing skills. Together, they search for the truth about their pasts and the mysterious organization known as “Les Soldats.”
Similarities to Brynhildr in the Darkness: Both are about young women with mysterious pasts and deadly abilities who are hunted by a shadowy organization. The focus is on the partnership between the two leads and the search for identity and truth. The tone is stylish, atmospheric, and deeply melancholic.
11. Canaan (2009)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 7.1
- Episodes: 13
- Studio: P.A. Works
- Notable Staff: Based on a scenario by Type-Moon, directed by Masahiro Ando.
Plot Summary: Canaan, a skilled mercenary with synesthesia, attends an anti-terrorism conference in Shanghai. She becomes involved in a conflict with a terrorist organization and a mysterious virus, while searching for her lost friend and rival, Alphard.
Similarities to Brynhildr in the Darkness: Both are action thrillers with a focus on female protagonists with unique abilities. The focus is on the psychological toll of their profession and the bonds formed through shared trauma. The series explores themes of identity, memory, and the consequences of violence.
12. Ga-Rei: Zero (2008)
- Streaming Availability: Funimation
- Rating: MAL: 7.5
- Episodes: 12
- Studio: AIC Spirits and asread.
- Notable Staff: Directed by Ei Aoki.
Plot Summary: This prequel to the Ga-Rei manga focuses on the bond between Kagura Tsuchimiya and Yomi Isayama, two young women who fight supernatural threats as part of a government agency. Their sisterly relationship is tragically torn apart when Yomi is consumed by a demonic force.
Similarities to Brynhildr in the Darkness: Both feature a secret government agency dedicated to fighting supernatural threats, with a strong focus on the bonds between its members. The central theme of a relationship destroyed by dark forces, and the subsequent struggle for redemption, is a powerful emotional core that mirrors the conflicts in Brynhildr.
13. Magical Girl Raising Project (Mahou Shoujo Ikusei Keikaku) (2016)
- Streaming Availability: Crunchyroll
- Rating: MAL: 6.9
- Episodes: 12
- Studio: Lerche
- Notable Staff: Based on the light novel series by Asari Endou.
Plot Summary: A popular mobile game grants selected players the ability to become real magical girls. However, when the game’s administrators decide there are too many magical girls, they initiate a deadly competition to reduce their numbers, forcing the girls to fight and kill each other.
Similarities to Brynhildr in the Darkness: Both are dark subversions of the magical girl genre, where the power system is a trap designed to exploit the protagonists. The focus is on the psychological toll of being forced to fight and the betrayal of trust. The series is a brutal, suspenseful exploration of survival and the corruption of innocence.
14. Blood-C (2011)
- Streaming Availability: Crunchyroll, Funimation
- Rating: MAL: 6.9
- Episodes: 12
- Studio: Production I.G.
- Notable Staff: Created by CLAMP, directed by Tsutomu Mizushima.
Plot Summary: Saya Kisaragi is a seemingly ordinary high school girl who secretly fights monstrous creatures called “Elder Bairns” to protect her village. However, she begins to notice inconsistencies in her memories and the behavior of those around her, leading to a horrifying revelation about her true nature.
Similarities to Brynhildr in the Darkness: Both are about a protagonist who is fighting against monsters while hiding a dark secret about their own nature. The focus is on the slow unraveling of a mystery and the discovery that everything the protagonist believed was a lie. The series is dark, suspenseful, and full of shocking twists.
15. Devilman Crybaby (2018)
- Streaming Availability: Netflix
- Rating: MAL: 7.8
- Episodes: 10
- Studio: Science SARU
- Notable Staff: Directed by Masaaki Yuasa, based on the manga by Go Nagai.
Plot Summary: Akira Fudo, a kind-hearted young man, merges with a demon to become Devilman, gaining incredible power while retaining his human heart. He must fight against other demons while grappling with the darkness within himself and the hypocrisy of humanity.
Similarities to Brynhildr in the Darkness: Both are about a protagonist who is transformed into something inhuman and must fight against powerful, malevolent forces. The focus is on the psychological toll of power and the struggle to maintain one’s humanity. The series is dark, violent, and deeply philosophical, with a similar willingness to explore the darkest aspects of human nature.
Why These Anime Work for Brynhildr in the Darkness Fans
Fans of Brynhildr in the Darkness are drawn to stories that are dark, suspenseful, and emotionally resonant. They appreciate a narrative that blends action and mystery with a focus on character development and the psychological toll of power. They are invested in underdog protagonists who are exploited by powerful organizations and must fight to reclaim their agency and their humanity. They are not afraid of a story that is willing to explore the darker side of science, society, and the human heart.
The anime listed above all share this fundamental DNA:
- Power as Exploitation: Whether it is the magic-users in Brynhildr, the Diclonius in Elfen Lied, or the assassins in Phantom, these series understand that power is often a curse imposed by those who seek to use others for their own ends. The protagonists are not empowered by their abilities; they are victimized by them, and their struggle is to break free.
- The Underdog Against the System: The protagonists are not heroes. They are victims, survivors, and outcasts who are fighting against overwhelming odds. Their strength lies not in their power, but in their resilience, their capacity for love, and their determination to protect the people they care about.
- Subversion of Genre Tropes: These series take familiar genres—harem, magical girl, action, horror—and use them to explore deeper, darker themes. They understand that the most compelling stories are not about defeating a villain, but about surviving, enduring, and finding meaning in a world that is often cruel and indifferent.
These 15 anime, like Brynhildr in the Darkness, are not afraid to look into the darkness. They are underrated gems that offer a thrilling, thought-provoking, and deeply moving experience for viewers who are willing to confront the shadows and emerge with a renewed appreciation for the light.
