Our hero Ryouta Arata is an otaku who's just lost his job after the dissolution of his company. Unwilling to return to his old NEET ways, he applies online to a private military security company, thinking the benefits to be promising. After what appears to be a baffling test, he's assigned to be an "operator of operators" and begins his training in a foreign country. Little does he know, the life of a private mercenary is far more grueling than he could have ever imagined!
Marginal Operation has finished publishing and it has 88 Chapters. It is also Known as: マージナル・オペレーション, Marginal Operation
Genres: Military , Action , Drama , Seinen , War , Violence , Psychological
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Top 5 Manga Like Marginal Operation [2026 List]
5. TS Eiseihei-san no Senjou Nikki
An ex-pro gamer of the FPS genre (♂) reincarnated in a fantasy world filled with magic... Only learn that what greeted him was not a scene from one's dreams but a muddy battlefield full of bullets flying to and fro! Moreover, he's now an orphan girl named Touri Noel?!
After her aptitude for healing magic was discovered, she decided to volunteer in the army as a second-class medic, all to raise money for the orphanage where she was born and raised. However, without even getting magic training, she was attached to an assault squad, repeatedly fighting on the most cruel battlefields of the "Western Front."
The mission given to her was to become the personal medic of the frontline's ace, Garback, and not let him die at any cost. But he turned out to be the worst commander, who will try to get results whatever the cost, even if it means the death of his subordinates!
On the battlefield, mired in unreasonable orders and violence, Touri's fierce battle for survival continues...
TS Medic's Battlefield Diary is currently publishing and has Chapters. It is also Known as: TS衛生兵さんの戦場日記, TS Eiseihei-san no Senjou Nikki
4. Lord of the Mysteries
With the rising tide of steam power and machinery, who can come close to being a Beyonder? Shrouded in the fog of history and darkness, who or what is the lurking evil that murmurs into our ears?
Waking up to be faced with a string of mysteries, Zhou Mingrui finds himself reincarnated as Klein Moretti in an alternate Victorian era world where he sees a world filled with machinery, cannons, dreadnoughts, airships, difference machines, as well as Potions, Divination, Hexes, Tarot Cards, Sealed Artifacts…
The Light continues to shine but mystery has never gone far. Follow Klein as he finds himself entangled with the Churches of the world—both orthodox and unorthodox—while he slowly develops newfound powers thanks to the Beyonder potions.
Like the corresponding tarot card, The Fool, which is numbered 0—a number of unlimited potential—this is the legend of “The Fool”.
Lord of the Mysteries has finished publishing and it has 1430 Chapters. It is also Known as: LotM, 诡秘之主
3. Itsuwari no Freja
Freya thinks of herself as a simple village girl, but her idyllic life is shattered when she is caught up in the aftermath of a treacherous Sigurdian plot. She bears a striking resemblance to her country’s beloved Prince Edvard, who lays dying from poison.
Without its ruler, all of Tyr will quickly be engulfed by Sigurdian violence. Now Freya must take Prince Edvard’s place and lead his valiant knights in defending the realm!
Prince Freya is currently publishing and has Chapters. It is also Known as: 偽りのフレイヤ, Artificial Freja
2. Lord of the Mysteries
Waking up to be faced with a string of mysteries, Zhou Mingrui finds himself reincarnated as Klein Moretti in an alternate Victorian era world where he sees a world filled with machinery, cannons, dreadnoughts, airships, difference machines, as well as Potions, Divination, Hexes, Tarot Cards, Sealed Artifacts… The Light continues to shine but mystery has never gone far. Follow Klein as he finds himself entangled with the Churches of the world—both orthodox and unorthodox—while he slowly develops newfound powers thanks to the Beyonder potions.
Lord of the Mysteries has finished publishing and it has 65 Chapters. It is also Known as: Lord of the Mysteries
1. Marginal Operation
Our hero Ryouta Arata is an otaku who's just lost his job after the dissolution of his company. Unwilling to return to his old NEET ways, he applies online to a private military security company, thinking the benefits to be promising. After what appears to be a baffling test, he's assigned to be an "operator of operators" and begins his training in a foreign country. Little does he know, the life of a private mercenary is far more grueling than he could have ever imagined!
Marginal Operation has finished publishing and it has 88 Chapters. It is also Known as: マージナル・オペレーション, Marginal Operation
