Here, are the list of best secret organization shows as below: チェンソーマン, 陰の実力者になりたくて!, 빅마우스, 아다마스, 환혼, SPY×FAMILY, 怪人開発部の黒井津さん, 오징어 게임, 探偵はもう、死んでいる。, Loki, NOBLESSE -ノブレス-, 呪術廻戦, Monument Mythos, THE GOD OF HIGH SCHOOL ゴッド・オブ・ハイスクール, La línea invisible, 루갈, ウルトラマンタイガ, 炎炎ノ消防隊, 消滅都市, からくりサーカス, ヒナまつり, B: The Beginning, Inside the Freemasons, ReLIFE, ディアスポリス -異邦警察-, キズナイーバー, シャーロット, GANGSTA., 血界戦線, 東京喰種トーキョーグール, .
Denji has a simple dream—to live a happy and peaceful life, spending time with a girl he likes. This is a far cry from reality, however, as Denji is forced by the yakuza into killing devils in order to pay off his crushing debts. Using his pet devil Pochita as a weapon, he is ready to do anything for a bit of cash.
Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!
A lawyer, caught up in a murder case, becomes a notorious and genius con artist overnight, in order to fight against a huge conspiracy and survive.
OTT Platforms for 빅마우스 are Disney Plus, wavve
Twin brothers Woo-sin and Soo-hyun lose their father in a murder case. Twenty-two years later, the brothers seek to clear their father's name.
OTT Platforms for 아다마스 are Disney Plus
A powerful sorceress in a blind woman's body encounters a man from a prestigious family, who wants her help to change his destiny.
OTT Platforms for 환혼 are Netflix, Netflix basic with Ads
World peace is at stake and secret agent Twilight must undergo his most difficult mission yet—pretend to be a family man. Posing as a loving husband and father, he’ll infiltrate an elite school to get close to a high-profile politician. He has the perfect cover, except his wife’s a deadly assassin and neither knows each other’s identity. But someone does, his adopted daughter who’s a telepath!
Touka Kuroitsu is a research assistant who belongs to the Monster Development Department of the evil organization Agastia. However, the enemy she has to fight right now isn't the heroes of justice, but her boss. So long justice exists, evil too, will exist. This is the story of those who fight secretly in the shadows of justice and evil's confrontation.
OTT Platforms for 怪人開発部の黒井津さん are U-NEXT, Amazon Prime Video
Hundreds of cash-strapped players accept a strange invitation to compete in children's games—with high stakes. But, a tempting prize awaits the victor.
OTT Platforms for 오징어 게임 are Netflix, Netflix basic with Ads
Kimizuka Kimihiko is a crisis-magnet. So it is no surprise when his rather mundane flight suddenly enters a state of emergency with a dire need of a detective onboard. Unfortunately, his attempt at avoiding trouble is foiled by a beautiful girl with silver hair who goes by the codename Siesta. Declaring herself a detective, she unceremoniously drags Kimizuka into the case as her assistant. That incident spelled the beginning of an adventure around the globe that went beyond his wildest imagination. Putting their lives on the line, the two took down criminal organizations, prevented disasters, and saved thousands. But the curtain closed to their epic journey with Siesta's untimely death three years later. Resolving to live an ordinary high school life this time, Kimizuka spends a year maintaining a low profile. However, as fate would have it, a girl with an uncanny resemblance to Siesta comes crashing into his life, threatening to throw his peaceful days into disarray.
OTT Platforms for 探偵はもう、死んでいる。 are Netflix, U-NEXT
After stealing the Tesseract during the events of “Avengers: Endgame,” an alternate version of Loki is brought to the mysterious Time Variance Authority, a bureaucratic organization that exists outside of time and space and monitors the timeline. They give Loki a choice: face being erased from existence due to being a “time variant” or help fix the timeline and stop a greater threat.
OTT Platforms for Loki are Disney Plus
Raizel awakens from his 820-year slumber. He holds the special title of Noblesse which is a pure-blooded Noble and protector of all other Nobles. In an attempt to protect Raizel, his servant Frankenstein enrolls him at Ye-Ran High School, where Raizel learn the simple and quotidian routines of the human world through his classmates. However, the Union—a mighty secret organization with strings around the globe and a goal to rule the world—dispatches modified humans and gradually encroaches on Raizel's life progressively—which causes him to wield his mighty power to protect those around him. After 820 years of intrigue, the secrets behind his slumber are finally revealed and Raizel's absolute protection as the Noblesse begins.
OTT Platforms for NOBLESSE -ノブレス- are Amazon Prime Video, U-NEXT
Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a classmate who has been attacked by curses, he eats the finger of Ryomen Sukuna, taking the curse into his own soul. From then on, he shares one body with Ryomen Sukuna. Guided by the most powerful of sorcerers, Satoru Gojo, Itadori is admitted to Tokyo Jujutsu High School, an organization that fights the curses... and thus begins the heroic tale of a boy who became a curse to exorcise a curse, a life from which he could never turn back.
The Monument Mythos is an Analog Horror series created by Alex Kansas. Combining the concept of analog horror with Alternate History, the series takes the form of Mockumentary videos focused around an America where things took a slightly different course, and where bizarre and unexplainable events occur near national landmarks like the Statue of Liberty or Mount Rushmore.
When an island half-disappears from the face of the earth, a mysterious organization sends out invitations for a tournament to every skilled fighter in the world. "If you win you can have ANYTHING you want," they claim. They're recruiting only the best to fight the best and claim the title of The God of High School. Jin Mori, a Taekwondo specialist and a high school student, soon learns that there is something much greater beneath the stage of the tournament.
OTT Platforms for THE GOD OF HIGH SCHOOL ゴッド・オブ・ハイスクール are U-NEXT Amazon Video.
The birth of the Basque terrorist gang ETA and its first attack, of which José Antonio Pardines, a Guardia Civil traffic officer, was the victim.
OTT Platforms for La línea invisible are Movistar Plus
A police detective who loses everything to a criminal organization seeks payback when he gains special abilities through biotechnology.
OTT Platforms for 루갈 are Netflix
Aliens have been emigrating to Earth secretly, but only a handful knows about this truth. Living in such a society, the main character Hiroyuki Kudo begins working at a private security organization E.G.I.S. (Enterprise of Guard and Investigation Services). The organization takes care of cases related with aliens, and Hiroyuki works day and night to protect peace. However, there lies a huge secret in him, which he himself is not aware of. He carries Ultraman Taiga’s “particle of light”. The new story begins as Taiga’s powers revive from Hiroyuki’s body!
OTT Platforms for ウルトラマンタイガ are Amazon Prime Video
Year 198 of the Solar Era in Tokyo, special fire brigades are fighting against a phenomenon called spontaneous human combustion where humans beings are turned into living infernos called "Infernals". While the Infernals are first generation cases of spontaneous human combustion, later generations possess the ability to manipulate flames while retaining human form. Shinra Kusakabe, a youth who gained the nickname Devil's Footprints for his ability to ignite his feet at will, joins the Special Fire Force Company 8 which composes of other flames users as they work to extinguish any Infernals they encounter. As a faction that is creating Infernals appears, Shira begins to uncover the truth behind a mysterious fire that caused the death of his family twelve years ago.
OTT Platforms for 炎炎ノ消防隊 are Netflix, Disney Plus, and U-NEXT Amazon Video.
One day, a city suddenly disappears. Takuya, a professional by-the-contract courier and lone wolf, meets Yuki, the only survivor from the city's extinction. The two rely on a message from Yuki's father, who was heard to be missing, and head toward the disappeared city, Lost. However, unexpected obstacles strike before the pair, with the reality especially shocking for Yuki. Before them are the feelings of those left behind, a mysterious group manipulating in the shadows, and unveiling the hidden conspiracy. Takuya and Yuki, who both were initially strangers, would deepen their bond during the journey and unravel the mystery of the Lost city.
OTT Platforms for 消滅都市 are U-NEXT
Narumi is certain that Masaru will be kidnapped by wooden puppets with supernatural strength after fighting them with all his strength. Masaru inherited his father's wealth which has brought many enemies out of the shadows, too many for Narumi to defend him alone. When Narumi is feeling discouraged, Masaru's watcher, Shirogane, arrives with a powerful weapon, the puppet Arlequin.
OTT Platforms for からくりサーカス are Amazon Prime Video, U-NEXT
One night, a strange object falls on the head of Nitta, a member of the yakuza. Inside the box is a strange young girl named Hina. She has tremendous supernatural powers, and Nitta finds himself reluctantly taking her in. Her powers can come in handy for his yakuza business, but he also runs the risk of her using them on him! Not to mention, if she doesn't use her powers, she will eventually go berserk and destroy everything around her. Nitta and Hina's strange life together is just beginning...
OTT Platforms for ヒナまつり are Netflix, U-NEXT
In a world powered by advanced technology, crime and action unfold in the archipelagic nation of Cremona. Genius investigator Keith Flick rejoins the royal police force just as serial killer “B” emerges. Mysterious youth Koku may be an ally, or a target.
OTT Platforms for B: The Beginning are Netflix, Netflix basic with Ads
With unique and unprecedented access to one of the world's oldest social networking societies this series asks who are the Freemasons and what do they do?
OTT Platforms for Inside the Freemasons are Sky Go, Now TV
Arata Kaizaki (27) quit the job he landed after graduation in only three months. His life did not go well after that. Now his parents are threatening to stop sending money, and want him to come back to the country. He has no friend or girlfriend to share his troubles with...as he hits rock bottom a strange man named Ryou Yoake appears. He invites Arata to join a societal rehabilitation program for NEETs called ReLife. This program uses a mysterious drug to make him look younger, and sends him back to high school for a year...
OTT Platforms for ReLIFE are Netflix, U-NEXT Amazon Video.
About 150,000 illegal entrants live in Tokyo. They are not recognised as refugees and live in poor conditions. To protect themselves, the illegals create a secret organisation. The organisation has a bank which Japanese Financial Services Agency is not involved with, a hospital that is not authorized by Japanese Ministry of Health, Labour, and Welfare and an illegals police force called "Dias Police." The only police officer in the organisation is Saki Kubozuka. His age and nationality is unknown. Saki Kubozuka does not speak much, but he has a warm heart and strong sense of justice. He takes care of the weak and tries to maintain public order.
The anime's setting is a fictional Japanese city named Sugomori City. One day, Noriko Sonosaki tells her classmate Katsuhira Agata, "You have been selected to be a Kiznaiver." The Kizuna System, which allows Katsuhira to share his wounds, connects him to the classmates whose lives and personalities completely differ from his. The Kizuna System is an incomplete system for the implementation of world peace that connects people through wounds. All those who are connected to this system are called Kiznaivers. When one Kiznaiver is wounded, the system divides and transmits the wound among the other Kiznaivers. Sugomori City is built on reclaimed land, but as the years go by, the city's population is decreasing. The story is set in this town where Katsuhira and the others live.
All thanks to the special ability that he developed, Yuu was able to cheat his way into a very prestigious high school. With his power, he thought nothing was going to stand in his way, until he met a mysterious girl named Nao Tomori and other students with special abilities just like him. It was the beginning to a new life.
In the crime-ridden, mafia-governed city of Ergastulum, Worick and Nicolas are two “handymen” known as “Benriya” who would take any dirty job from either police or mafia — for a good price. After an assignment from police the two met and later joined by Alex, a former prostitute who got interested in the mysterious background of the team, in particular of Nicolas’ abilities.
One day, New York City as we know it vanished overnight into a mysterious fog. Now known as Hellsalem's Lot, it has become a place where another world beyond imagining is connected to our reality. The balance within this new world is protected by a secret society known as Libra. Leo, a journalist and photographer who arrives in the city, is unexpectedly recruited to join their ranks.
OTT Platforms for 血界戦線 are Netflix, U-NEXT
Ken Kaneki is a bookworm college student who meets a girl names Rize at a cafe he frequents. They're the same age and have the same interests, so they quickly become close. Little does Kaneki know that Rize is a ghoul – a kind of monster that lives by hunting and devouring human flesh. When part of her special organ – "the red child" – is transplanted into Kaneki, he becomes a ghoul himself, trapped in a warped world where humans are not the top of the food chain.
OTT Platforms for 東京喰種トーキョーグール are Netflix, U-NEXT