In World War II the Japanese military approached the genius onmyoji Yakou Tsuchimikado, seeking new weapons to further the country's ambitions of becoming a world power. With their resources he was able to rewrite the book on magic, creating a modernised form of Onmyodo with incredible power. Yakou was regarded as a hero or even a figure of worship... until he brought about the Great Spirit Disaster in Tokyo during a Last Stand to avert Japan's defeat. While Yakou died in the Disaster, magic and Magitek derived from his teachings are still in use today.Harutora Tsuchimikado comes from a branch of the same prestigious family as Yakou, but his ability to detect spirit energy is zero. Since he has no interest in becoming a proper onmyoji nor obligation to do so, he's been enjoying a peaceful daily life with his friends at a normal high school. And then one day his childhood friend Natsume Tsuchimikado, heir to the head family, suddenly appears...A manga adaptation is currently running, while an anime adaptation aired in October 2013.
The Dark Arts: Imperial-style Onmyodo, the original version of Yakou's techniques from before the civilian curriculum was developed. Most, but not all, of its spells are banned for being too dangerous or destructive or for being related to soul manipulation.
Death Is Cheap: Averted. Several characters get revived. But not one has come back as a human...
Deconstruction: The story deconstructs the role of magic in society and its lack of domestic benefits. Its only use is combat and exorcising spiritual disasters caused by Yakou's failed ritual and spiritual terrorism.
Dramatic Irony: Natsume is the controller of the operation-type shikigami Hokuto, this means that the Hokuto Harutora knew was actually Natsume, but Harutora is too dense to figure it out. At least initially.
Earn Your Happy Ending: Subverted in a very heart wrenching manner. Near the end of volume 10 Natsume races to Seishuku branch temple to reach Harutora whom she hasn’t seen in a year. She clashes with Hayato Yamashiro and Tsuchigumo warriors using the power that sustains her life and nearly dying as a result. Before Natsume reaches Harutora, he senses her presence. And leaves.
Empathic Environment: Inverted. Fireworks popped in the background while a captured Harutora is forcefully kissed by Suzuka in-front of his love interest, Hokuto (the girl), and continue to pop when a teary Hokuto runs away. Again, fireworks popped in the background when Natsume sacrificed her life to save Harutora after the Raven Coat reacted with his power.
Firing One-Handed: Averted in the anime with Magical Crime Investigatorsnote mage police, they use both hands when using handguns. Played straight with Hirata Atsune because he is actually a teenager in disguise.
Flash Step: Spirit Step, an Imperial Style spell that Reji Kagami performs during the Chimera Incident. It uses spirit pulses to move from one location to the next instantly.
In the early episodes, Hokuto (the dragon) responds to Harutora calls.
When Natsume names her remote body shikigami Hokuto (the girl) who is really her after the dragon Hokuto.
When Suzuka hugs an one eyed tiger plushie with an bandaged eye.
Episode 9 When Hirata is performing the Taizan Fukun Ritual then giving thanks to the dead Mutobe.
Touji is seen walking out of Shamanic/Onmyo Clinic in the first episode.
Episode 2 has a pretty subtle one: during a history lecture on prominent Onmyouji, on blackboard lists the names and info of Abe no Semimei and Douman Ashiya are displayed. However only a birthdate and deathdate is shown for the former...
In Light Novel & Manga: When Ohtomo first meets Kon he notes that she has a seal on her, this mentioned again by Suzu Saotome.
In Episode 6 the camera pans to Kon as Kakugyouki comments on Hishamaru.
Gone Horribly Right: The Tsuchigumos developed by Yakou Tsuchimikado for the army were used to wipe out a group of Magical Crime Investigators and Kill the Cutie. Douman also used imitations of them to attack Omnyo Preparatory School and the Onmyo Agency.
Government Agency of Fiction: The Lingering Spirit Division in the Imperial Household Agencynote Responsible for stabilizing the spirit flow in Tokyo and exorcising lingering spirits which were predominantly nobles and royalty. This Agency became a nest for Yakou fanatics due to the nature of the work and was purged prior to the beginning of the story.and The Onmyo Agency.note Includes the Exorcism Bureau to handle spiritual disasters and the Magical Crime Investigation Bureau.
Gratuitous English: Rather than something traditional like "Kyu-kyu nyo ritsu ryo"note Roughly "Heed this command swiftly", a phrase originally used to end government decrees, the trigger command for modern onmyodo spells is "Order!".
Guns Are Worthless: Averted as they show up in the hands of the right people despite the fantasy setting, who are not afraid of using them and the bullets hurt and kill people. Played straight against any of the top Onmyoji.
Hair Decorations: Hokuto wears a ribbon that Harutora won. Natsume also wears it being one and the same.
Lowered Monster Difficulty: The first time a Tsuchigumo is seen, it defeats a group of professional Onmyoji with ease. The second time they are deployed en mass by Douman and are held back by a group of Onmyoji students. Justified in that they were imitations that lacked solid vessels.
Mistaken for Gay: Both Harutora and Natsume are mistaken, when Natsume's male double shikigami (long story) undresses while in Harutora's embrace. The Girls LOVE IT.
Mistaken Identity: Harutora is sometimes mistaken for Natsume. This is mostly due to Natsume pretending to be a boy. The reason Kyoko even likes Natsume is because she got Natsume mixed with Harutora as children and really fell in love with him.
Moment Killer: Suzu Saotome showing up right before Natsume is about to confess to Harutora.