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What is Mato Seihei no Slave?

Mato Seihei no Slave manga

Mato Seihei no Slave is an exciting manga series by author and artist, Keishi Ayasato. The story is set in a dark and dystopian future where humanity has been pushed to the brink of extinction by mysterious mechanical monsters known as Gadoll. These seemingly invincible beings have completely taken over the world, forcing people to go into hiding and fight for their survival.

The series follows the story of a young boy named Haru, who has been living in hiding with his fellow humans, until he is discovered by a group of soldiers belonging to an elite military force known as 86. These soldiers are known to be the best in the world, and their only mission is to battle the Gadoll and protect humanity from their relentless attacks.

As Haru is taken in by the 86 and trained to become a soldier himself, he begins to uncover the hidden secrets behind the war and the true nature of the Gadoll. Along the way, he becomes embroiled in a thrilling string of battles, political intrigue, dark conspiracies, and unexpected twists that will keep readers on the edge of their seats.

The manga is a great blend of action, drama, and suspense, with stunning artwork and a compelling storyline that leaves readers wanting more. Whether you’re a fan of dystopian fiction, action-packed adventures, or just great storytelling, Mato Seihei no Slave is definitely worth checking out.

The Quest to Become a Gear

Mato Seihei no Slave - Melos

Mato Seihei no Slave, also known as The Strained Arm of the Slave, is a post-apocalyptic adventure manga that follows the story of Melos, a girl with a strong will to become a Gear. In the world of this manga, Gadoll – vicious, monster-like creatures – are a constant threat to humans, and Gears are the only ones who can defend them.

The story begins with Melos and her two friends, Terra and Locker, who all dream of becoming Gears and fighting against Gadoll. The journey to becoming a Gear is grueling and full of danger, but Melos and her friends are determined to push through no matter what. They enter the Academy, where those with potential to become Gears train. There, they meet various other characters, including Nene, a fellow student who idolizes the legendary Gear, Strada. Melos is determined to become as strong as Strada so she can protect everyone and defeat the Gadoll once and for all.

Throughout her training, Melos discovers that becoming a Gear is more than just about being strong enough to fight the Gadoll. She learns that the process of becoming a Gear involves implanting pieces of Gadoll into one’s body, which gives them the power to fight back against the Gadoll, but also comes with a terrible cost.

The Dark Secret Behind Becoming a Gear

Mato Seihei no Slave - Gears

As Melos progresses through the Academy, she discovers that the process of becoming a Gear has a dark side. Gears are not just humans who can fight the Gadoll; they are also slaves to their own power. The implanted Gadoll pieces constantly increase the Gears’ thirst for battle, and without regular battles, the Gadoll will consume the Gear’s body and mind. Moreover, if a Gear tries to remove the Gadoll pieces, they will die. It’s a desperate situation, as the Gadoll invasion only allows a little time for rest before they strike again.

Despite her initial shock and sorrow, Melos refuses to accept the fate of the Gears. She tries to find a way to remove the Gadoll from her body, but to no avail. It’s then that she realizes that the only solution to this endless cycle is to eradicate the Gadoll from the world forever. The story follows Melos as she struggles to come up with new strategies to fight the Gadoll and achieve her ultimate goal.

The manga also explores other relevant themes such as the price of power, the importance of perseverance, and the significance of companionship in the face of conflict.

The Journey of Melos and the Gears

Mato Seihei no Slave - Melos and Nene

Mato Seihei no Slave is a gripping and thrilling manga that keeps readers hooked from start to finish. The gripping storyline and development of characters make it a must-read for anime and manga fans. Readers will root for Melos and the Gears as they strive to rid their world of the Gadoll monsters once and for all. The manga’s unique twist on the post-apocalyptic genre and themes of power and companionship make it a truly entertaining and thought-provoking read.

Overall, Mato Seihei no Slave is a great manga that will leave readers excited for the next chapter in Melos’s journey. It’s a compelling tale that highlights the lengths a person is willing to go for a better future, despite the sacrifices that must be made.



Melos is the main protagonist of Mato Seihei no Slave. She is a Gear, a highly trained soldier who pilots a mecha known as a Slave. Melos is determined and driven, always striving to do her best and protect those she cares about. She has a strong sense of justice and does not hesitate to take action when she believes it is necessary.

Melos has a tragic past that haunts her to this day. She lost her family in a devastating war and was forced to flee her home. This experience has shaped her into the person she is today, and fuels her desire to make a difference in the world.



Cyrus is Melos’ childhood friend and fellow Gear. He is a charming and charismatic young man who always keeps a cool head during battle. Cyrus’ specialty is close-range combat, and he is known for his lightning-fast reflexes and expert swordsmanship.

Despite his laid-back demeanor, Cyrus is fiercely loyal to his friends and will stop at nothing to protect them. He has a strong sense of justice and will not hesitate to speak out if he feels that something is wrong.



Zero is a mysterious man who possesses a unique ability that allows him to manipulate time. He works for an organization known as the Inquisition, who are dedicated to eradicating the threat posed by the Slaves and their pilots.

Zero is calm and collected, rarely showing emotion. He is a skilled fighter and strategist, able to turn the tide of battle with ease thanks to his time-manipulating powers. Despite his allegiance to the Inquisition, Zero’s true motives and loyalties are shrouded in mystery.

Overall, the main characters of Mato Seihei no Slave are a diverse and compelling group, each with their own strengths, weaknesses, and motivations. From Melos’ unwavering determination, to Cyrus’ swashbuckling charm, to Zero’s enigmatic presence, each character brings something unique to the story.

Art & Style

Mato Seihei no Slave manga

Mato Seihei no Slave is a manga with a stunning art style that captures the essence of the story. The art is detailed and emphasizes motion, making the action scenes come to life. The characters are designed in a way that complements the overall atmosphere of the story, from the seriousness of the war to the emotional turmoil of the characters.

The manga’s art style is defined by its intricate details and the clear portrayal of emotions through the characters’ expressions. The characters’ unique appearances give them an air of mystery and intrigue, making them all the more compelling to follow. The artist has put a great amount of effort into the character designs, and it shows in every panel of the manga.

One aspect that distinguishes Mato Seihei no Slave from other manga is the use of shading and lighting. The artist has expertly used shading and lighting to give the scenes depth and atmosphere. The dark and brooding scenes of war are offset by the light and airy scenes depicting the daily lives of the characters. The art style perfectly captures the mood of the story, making it even more poignant and emotional.

The action sequences in Mato Seihei no Slave are impressive as well. The artist puts a lot of thought into the movement of the characters and making sure that they are realistically depicted. The use of motion lines and dynamic camera angles adds to the excitement of the action scenes. The art style also makes it easy to follow the action and understand what is happening, which is crucial in a manga with such intense fight scenes.

Overall, the art style of Mato Seihei no Slave is a major selling point of the manga. The illustrations are beautiful and engaging, and they expertly evoke the emotions of the story. The characters are intricately designed and their unique appearances make them stand out in a world of manga with similar character designs. The use of shading and lighting adds depth to the scenes, making them more memorable. The action sequences are a thrill to read, making the manga even more exciting to follow. Mato Seihei no Slave truly stands out in terms of its art style and is a must-read for any manga lover.

Exciting and Engaging Storyline

Exciting and Engaging Storyline

Mato Seihei no Slave is a captivating manga that has managed to captivate the attention of many manga lovers. The series has a plot that is both thrilling and captivating, making it the perfect choice for fans of action and drama manga. The story is set in a post-apocalyptic world where humanity is fighting for survival against monstrous creatures known as “Metroids.”

The manga follows the journey of a young boy named Haru Tajima, who becomes a member of the “Slave Corps,” a group of elite soldiers who use specially crafted weapons and armor to fight against the Metroids. The story takes a unique twist in that the soldiers are themselves slaves, owned by their superiors and forced to fight in the war. Despite this, the soldiers develop a strong bond of camaraderie and loyalty, which adds to the depth of the story.

The storyline is full of twists and turns, with each chapter leaving readers on the edge of their seats, eager to find out what happens next. The themes of sacrifice, redemption, and brotherhood are explored in-depth, making the story both emotionally engaging and thought-provoking.

Beautiful Art and Stunning Characters

Beautiful Art and Stunning Characters

One of the standout features of Mato Seihei no Slave is the stunning artwork. The characters are beautifully drawn, and the fight scenes are dynamic and visually captivating. The manga also uses color to great effect, with bold and vibrant colors used to convey the action and emotions of the characters. Every detail is meticulously crafted, creating an immersive and visually stunning world.

The characters themselves are also a highlight of the manga. Each member of the Slave Corps has a unique personality and backstory, which is slowly revealed over the course of the series. Haru Tajima, the main character, is a spirited and determined young man who makes for an excellent protagonist. The antagonists are also well written, with their motivations and backstories adding depth to the story.

Positive Reviews and Reception

Positive Reviews and Reception

Mato Seihei no Slave has received positive reviews from both critics and fans alike. The manga has been praised for its unique take on the post-apocalyptic genre, with many noting the originality of the storyline. The characters have also been praised, with some critics noting their depth and complexity.

The artwork has also been praised, with many noting the attention to detail and the dynamic fight scenes. The use of color has also been praised, with some critics noting that it adds to the overall mood and tone of the series.

Overall, Mato Seihei no Slave is a standout manga that has captured the hearts of fans around the world. With its engaging storyline, stunning artwork, and unforgettable characters, it is no wonder that the series has received such positive reviews and reception.