Arpeggio of Blue Steel – Read all manga chapters free online

Arpeggio of Blue Steel Japanese manga

Arpeggio of Blue Steel also known as Aoki Hagane no Arpeggio. It is a Japanese manga series and has produced by Ark Performance. It has been serialized in Young King Ours by Shōnen Gahōsha. As of now, 22 volumes of the manga series have been released. An anime series of same name has been released by Sanzigen. The anime was aired from October 7, 2013 to December 23, 2013. Based on this series, two films also have been produced by them. The first film was released on January 31, 2015, while the second film was released on October 3, 2015.

GenreMilitary science fiction , action , adventure, drama, romance
Themesbattleships, military, conspiracy, navy, war, tsundere
Story WriterArk Performance
PublisherShōnen Gahōsha
SerializationYoung King OURs
English publisherSeven Seas Entertainment
Total Volumes (till date)22 (twenty two)
Initial runSeptember 30, 2009 till present
Online DistributionCrunchyroll
English TranslationGreg Moore, Kevin Frane
AdaptationYsabet Reinhardt MacFarlane
Chapters109 (till date)
English PublisherJason DeAngelis
Highlights of Arpeggio of Blue Steel aka Aoki Hagane no Arpeggio Manga

Story of Arpeggio of Blue Steel

A lot of Earth’s landmass gets lost in the early 21st century. This is due to global warming and rising sea levels. It is the year 2039 and a very powerful living warship appears surprisingly appears. The fleet has alien weaponry and equipped with advanced technology. The warships start to attack and destroy naval forces on the earth. The fleet is called as “Fleet of Fog”. Across the world they apply blockade on navy and also on the air. It stops people from travelling to other parts of the world either via navy or through airways.

Fleet of Fog creates a humanlike Mental Models during the blockade. These are having the shape of humanoid avatars. They the Union core of the ship and it is a way to evolve own development and to defeat their lack of creative thinking. They want to mimic the tactics which the humans have. The Fleet of Fog also makes the Mental Models to possess their own unique personality.

Gunzō Chihaya is the past student of the Japanese National Marine Academy. He is the captain Blue Steel which is a small group of privately owned warships. The Blue Steel contains Mental Model Iona and Fog submarine called I-401. Iona has shifted to the side of the humans. I-401 has a powerful technology and with Gunzō’s tactical skills the Blue Steel has put up a strong resistance against Fleet of Fog. It has also succeeded in sinking one of Fleet of Fog’s very powerful warships.

Gunzō and his team are put to use by a group of the Japanese government. They need to deliver a prototype of the vibration warhead. It might just be the powerful weapon that might allow humans to fight back against the Fog. They need to deliver this to The United States as it is the only country with the resources and capability to produce the weapon system on a mass scale.

The Blue Steel is challenged not only by Fleet of Fog and their human friends but also from other governments and groups with their own programs. Both the sides they gain friends along the way. This is increasing their chances constantly.

Arpeggio of Blue Steel manga
Arpeggio of Blue Steel manga

Read Arpeggio of Blue Steel manga free online

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If you would like to read the manga free and without paying, there are a lot of websites that offer this. You may visit this link and start reading each chapter. Each page is presented as an image which you can navigate using the tabs at the top of the page. Browse every chapter using the dropdown given at the beginning. In case you want to read it offline then you can save the page as PDF and store it on your device. You can read the PDF as per your convenience.

There are options available to load up to 10 images at once. Also different image sizes and quality is available to choose from. Start enjoying the Aoki Hagane no Arpeggio or manga!

Arpeggio of Blue Steel manga volume 2 chapter 6
Arpeggio of Blue Steel manga volume 2 chapter 6

Characters appearing in Arpeggio of Blue Steel Manga

Gunzō Chihaya

He is the main character of the show and captain of the I-401. He is the leader of the Blue Steel Fleet. His main main is to come equal to Fleet of Fog and not to destroy it. He wants to lead a peaceful negotiation.

Iona / I-401

The I-401 submarine has a Mental Model or a human form known as Iona. She leaves the Fog on her own will and becomes Gunzō’s vessel.

Iona uses the M6A Seiran dive bombers in the manga. The aircraft is equipped by her real life counterpart. It is the only Fog vessel to utilize this aircraft.

Sō Oribe

He is the first friend of I-401. Sō Oribe has some sort of allergy due to which he always ears a helmet. He is the best friend of Gunzo and he knows what Gunzo is thinking. He is a person who steers a ship and executive-officer of the ship.

Kyōhei Kashihara

He is the weapons officer of I-401. Blue Steel generally has people who are top ten in their Naval Academy days. However, Kyōhei had 200th place in the Naval Academy. Kyōhei has a very big collection of photogravure idols merchandise. When the crew goes into a pinch, Kyōhei is generally the first to panic.

Iori Watanuki

He the engineer and operates the engines of vessel I-401.

Shizuka Hazumi

She operates the sonar of I-401. She is also a very good soldier and can destroy a lot of troops. She has good skills and strategy. No body knows her past and it is a mystery. It is known that she has been to Taiwan.

Arpeggio of Blue Steel manga volume 3 chapter 12
Arpeggio of Blue Steel manga volume 3 chapter 12


She is the past battleship of Fog. Also a flagship of the Second Oriental Fleet. Hyuga was defeated by Iona and her group. She has Super Gravitational Cannon which was saved by Gunzo and his team. They later installed it on I-401. The human form of Hyuga (Mental Model) has become the port operator of Blue Steel. She is defending the island with the help of ship’s weapons and Wave Force Armor.

After the completion of their battle, she has become preoccupied with Iona. She is affected by the closeness of Inoa with Gunzo as she is affectionate to him. She is worried about her friends safety and goes to any extent to help them when in need. She is also good in hacking skills. She has hacked Fog’s vessel system in order to keep her vessels in safe condition.

In the movie Cadenza, she consumes half of the island and returns Takao to its previous condition. They travel together and defeat Musashi and fight the fog vessels of the student council.


Takao was the Fog’s naval warship which was designed for long range and high speed and armed. In the manga she is the human form or the Mental Model. She gets defeated by Gunzo in the battle and later joins the Blue Steel fleet. She also falls in love with Gunzo. Zorman’s fleet almost destroys her in the battle. However, Iona and Hyūga carry out surprise attack at the right time in order to save her.

Her core is saved by I-401 and sent to Yamato. She is assigned by Yamato to gain access to a human facility. This is for a special mission and she is promised to be sent to Gunzo’s side after accomplishing the mission. A related manga series called Salty Road shows Takao’s and other human’s efforts during this mission.

In the modification of Ars Nova, Gunzo is in trouble and I-401 is damaged very badly. Takao sacrifices herself in order to save them. Ars Nova is the super submarine created out of this result which possess processing capabilities and firepower of both Iona and Takao. The submarine’s computer system has Takao in its digital form. Takao gets her human form at the end of the anime.

In the movie Cadenza, she gets her ship back after acting as a messenger of Japanese Government. She helps with the vibration warheads’ codes. She gets into a combat to save I-401 with the help of Hyuga’s skills. They fight the fog’s student council and wins time. This allows I-401 to defeat Musashi. Initially Takao possessed a Super Gravitational Cannon. Later the ship gets rebuilt which has two large drills. These have been borrowed from the old base on Iwo Jima. This annoys Takao.

Japanese government and military

The Japanese government and Self-Defense Forces (JSDF) were restructured as a result of blockade by Fleet of Fog. The Prime Minister leads the nation and makes important decisions for the whole nation and deals with the local affairs. The JSDF has an Army, Navy and Air Force of its own and becomes an actual military. After the Fleet of Fog blockade, many United States Forces end up stranded and gets absorbed into Japanese military. They marry Japanese nationals and start families.

Nobuyoshi Kaede

He is the Prime Minister of Japan. Kaede gets injured while battling the Fleet of Fog. This makes him crippled and needs to use a wheelchair. He uses cybernetics to see and speak.

Ryūjirō Kamikage

He is the Assistant Secretary of Military Affairs. He transports the Vibration Torpedo to the United States for mass production after hiring Gunzo and Blue Steel Fleet. Vibration Torpedo is the first human made weapon which has the capacity to destroy Fleet of Fog ship. There is rivalry between him and Ryōkan Kita and his supporters as they make their own plans for the I-401.

Cruz Herder

He is the past officer of United States Marine Corps. Cruz becomes Japanese Navy Lieutenant and Commander of United States Forces Japan. He helps Kamikage as Blue Steel fleet transport the Vibration Torpedo to the United States

Ryōkan Kita

He is the rival of Ryūjirō Kamikage and is expected to become the next Prime Minister of Japan. He holds a lot of influence in the National Diet which is Japanese bicameral legislature. He was past captain of a Japanese Navy Destroyer. Ryokan is senior of the previous Naval battle between the UN Naval Fleet and the Fleet of Fog. He wants the I-401 given back to the Japanese government. It can be reverse engineered to prepare their own Fleet of Fog ships. This makes him go against Kamikage. He has contacts within the Japanese Army who would like to gain the limelight. This is after Japanese Navy is given more focus by the government.

Arpeggio of Blue Steel manga volume 18 chapter 104
Arpeggio of Blue Steel manga volume 18 chapter 104

Hiroshi Uragami

He is the Vice-Admiral of the Japanese Navy and a friend of Gunzo. Hiroshi knows Gunzo’s father. Hiroshi also supports Kamikage’s ideas for the Blue Steel fleet.

Daisaku Komaki

He is the captain of Japan’s newest attack submarine called as Hakugei 3. Hakugei defeats Kirishima and Haruna with the help of I-401. Thus, Hakugei becomes the first human vessel to conquer two Fog ships at the same time. Daisaku Komaki and Ryūjirō are old friends.

Maruri Hibiki

She is a Japanese naval academy member and former sonar operator of the I-401. She and Gunzō were classmates during their academy days. Maruri was in love with Gunzo and she joined his crew as one of the first members. However, after Gunzo starts to put himself in danger, she is unable to withstand the same. Therefore, she quits I-401 and joins back the Japanese Navy.

Makoto Osakabe

He is the Prime Minister of Japan and also Mayor of city of Sapporo. In order to make a better government administrator, he was created out of genetic engineering. He needs to take special medicines to eat as his body does not have natural bacteria to digest food. Makoto displays attention towards his creator Tōjūrō Osakabe and his sister Makie although he shows no emotion. In order to help his creator, he alerts Tōjūrō Osakabe that the Japanese Army is planning to kill him and Makie.

Characters in the Fleet of Fog of Japan

This is the Fleet of Fog present in the territorial waters of Japan. Around Japan they create a siege so as to stop any ship or aircraft from leaving. First and the Second Oriental Fleet are the two patrol fleets keeping the blockade. However, I-401 makes Hyūga to go down which is the flagship of the Second Oriental Fleet. It makes the Fleet of Fog to restructure which creates an opening in the blockade. Once they complete their reorganization, Kongō becomes the flagship of the Second Fleet. Nagato becomes the flagship of the First Fleet.


Yamato is the highest flagship of the Fleet of Fog. Other ships got the ability from Yamato to evolve their own avatars. Yamato has two different avatars called as Kotono and another one with her own name. They are modeled after Kotono Amaha who was undefeated rival of Gunzō. As per some of Gunzo’s freinds, she was his love interest. It is not known if Kotono Amaha known by Gunzo was human or Yamato’s second avatar.


She is the the flagship of the Second Oriental Fleet. Kongo is after Yamato in command. In the Ars Nova adaptation, she follows Iona and the other Mental Models. She feels that they are acting abnormally due to their contact with Gunzō. At the end of the series Iona and Kongo become friends. This is after Iona realizes that her previous isolated life was somehow disappointing and lonely. She quits the Fleet of Fog and wants to explore the world. She does not join the Blue Steel Fleet.


The Flagship of the First Oriental Fleet and has two Mental Models. Nagato has interest in Japanese culture. She acts according to its customs.


She is a Fog battleship. Her avatar takes the shape of a teenage girl. She is wearing a heavy coat covering entire body up to the nose. After failing to defeat I-401, Haruna becomes friend with a girl called Makie. Haruna finds the truth behind Makie and agrees to protect her. This is even if it requires to go against Fog.


It is a Fog battleship which joined Haruna in order to defeat I-401. Kirishima and Haruna join to form a stronger vessel but still they get defeated by I-401. Only her core survive the destruction.

It is later put out of sight inside a Teddy bear which is property of Makie. Over the course of the series, she gets adjusted to using the Teddy Bear as her stand-in Mental Model. Kirishima assists Blue Steel Fleet along with Haruna and Makie.


She’s the sister ship of Kirishima, Kongō and Haruna. She gets defeated by Kongo and she is left unmovable and is not destroyed. Hiei is second after Kongo and is the leader of the Second Oriental Fleet after Kongo disappears. She becomes a high school student in her mental model and rules over her subordinates.


She is Hyuga’s elder sister and subordinate of Hiei. She becomes the flagship of First Oriental Fleet after Kongo and Hiei depart to defeat I-401.


She is under the instructions of Haruna. Maya remains loyal to Haruna even after she opposes the Admirability Code. She plays many musical instruments and gets upset if anyone ignores her.

Blue Steel poster
Blue Steel poster


She is one of the triplet sister of Iona and one of the two submarines who are under Yamato’s command. She is generally wearing a Qipao which is a type of Chinese dress. She and I-402 get defeated by I-401.


She is the other sister of Iona and also the submarine under Yamato’s command. She has been tasked by Yamato to observe Takao during her assignment at the Japanese Naval Academy. She gets information from the locals. In the end she and I-400 get defeated by I-401.


She is one of the subordinate of Hiei and her avatar wears the dress of a high school student. In her vessels she has sniper cannons having long range ability. She uses an eyepatch in order to snipe on her enemies which is outside their effective range.


She is also one of the subordinate of Hiei and younger sister of Myoko. She is the sonar operator and partner of Ashigara. Nachi uses her sonar scanner in order to detect her enemy vessels.


Ashigara is one of the subordinate of Hiei and younger sister of Myoko. She is rude, restless and violent. She has the tendency to forget important things. While during battle with I-401 she uses all her weapons. Ashigara has a harpoon possessing large energy and fired from the seaplane catapult.


She is also the youngest sister of Myoko and subordinate of Hiei. She does not like wearing a school uniform. Haguro is the fastest ship of the Fog. Her vessel is having the most number of gravitational engines.


She is the sister of Maya and Takao and is the only person not to wear uniform besides Kongo. Atago is the subordinate of Hiei.


She is the repair vessel under the order of Kongo. She helps Kongo to set up the flagship equipment.


She is part of Yamato’s personal guard and is also a destroyer. Although she is a destroyer, Yamato has approved her to have a mental model.


She is one the the biggest vessel in the Fleet of Fog. Zuikaku is assault and suppression vessel. She is a young girl as mental model and also has a cat as a pet. Zuikaku was created as an assault and suppression vessel although it is based on an aircraft carrier.

Zuikaku shipped I-402 and Takao to the Yokosuka city suburbs. It was in order infiltrate the Japanese National Maritime Institute of Technology by the heavy cruiser.

Characters of Fleet of Fog/Europe (Scarlet Fleet)

Shōzō Chihaya

He is the father of Gunzo. He becomes a war hero during the last battle between the Fleet of Fog and UN Naval Fleet. I-401 submarine gets captured by Chihaya and his crew. After I-401’s first visit of pacific, Shozo and his crew disappeared mysteriously which leads to suspicion of his death. I-401 submarinecomes back to Japan after an year but without its crew. A spy drone finds out 2 years before the start of the Series that Shōzō and his crew were alive. They were on board the Fog warship Musashi, disclosing that they had shifted over to the Fleet of Fog. He is in command of European Fleet of Fog also known as Scarlet Fleet.

Along with his flagship and avatar Musashi, the Scarlet Fleet makes association with the United Kingdom in order to end the European War.


She is the flagship of Shozo. her avatar is a blonde woman in a white coat. She has a long white hair and wears a black swimsuit in the anime series.


They are two blonde twin girls and are avatars of Bismarck. She becomes a passive observer in the series.

Zordan Stark

Zordan has been commanded by Shozo to stop the Blue Steel. Is also the captain of U-2501. The submarine also has a weapons officer called Romuald and sonar operator called Francette.


It is the submarine mental model of Zordan and is part of the Scarlet fleet. It is very powerful in the Series.


It is the battle cruiser of Fog and the mental model appears as a maid. She and Vampire are chased by dishonest element of the Fleet of Fog lead by Hood. He wants them to join him on the quest of stopping Shozo who has maintained authority of the fleet. However, both Repulse and Vampire continue their duty of maintaining the blockade.


She is also a destroyer like Repulse. As she is not in possession of enough processing power, Repulse gave her some of her own. This enables her to have a mental model just like a maid however, with vampire like looks.

Prince of Wales

Just like Repulse she appears as a maid. She gave an impression of persuading Vampire and Repulse to join Hood’s attempt to suppress Chihaya.


She is the first American ship shown in the series. She is encircled by lot of mess such as multiple books, coffee mugs, and various small ornaments she studies or works with. Generally she is not much motivated and calls U-2501 as unpleasant. She gives more attention to her books and ornaments than to Zordan Stark when he tries to talk to Lexington.

There is a mental model of her which is tall and slim and looks to be in her twenties. Although she claims that she wants to help Kongo in their battle against I-401, she has not made any hostile attempt against I-401. For a brief period, she combats U-2501. It is later shown that she is working outside for last one year and a half. She is the university professor and has a liking for history.

Other characters of Arpeggio of Blue Steel

Makie Osakabe

She has been gametically engineered and a deign child. She is made to have good intellectual abilities. Makie is the only one to survive after infant age. The Vibration Torpedo which is the secret weapon on the Blue Steel fleet has been developed by Makie. The military tries to kill her and ever since she is under the protection of Kirishima and Haruna. During the final battle in the Arctic she is found on the bridge formed by combining her two guardians.

Tōjūrō Osakabe/Lawrence Valentine

He is the creator of Makie and also the servant of Makie. Tojuro was asked to create a genetically engineered child in order to help Japan to survive during the blockade. Since only 7 of the thousands survive, he regrets the idea. The government plans to kill Makie as she developed the Vibration Torpedo. However, Tojuro uses his connections to convince the government to pare her and also giver her a mansion with him a s a butler.

The military tries to kill her when they come to know that she is under the protection of Haruna. They do this in order to prevent the secret of Vibration Torpedo from being revealed. Tojuro has asked Haruna to help Makie escape from Japan. Later, Tajuro sacrifices himself to save Makie being shot from the army sniper.

Saori Chihaya

She is the mother of Gunzo and father of Shozo. She puts herself in house arrest as both her son and husband abandon the Japanese military. She meets and makes friends with Takao when Takao wants to experience human life through the mental model.

Arpeggio of Blue Steel / Aoki Hagane no Arpeggio Manga Series Information

The series started on September 30, 2009 in the Young King OURs magazine of Shōnen Gahōsha. The first individual volume of the manga series appeared on April 30, 2010. As of the end of 2021, twenty two volumes have been published. A short story as well as drama CD were released in the form of a guide book. In July 2013, Seven Seas Entertainment licensed the series and released the first volume on July 1, 2014. Since then they have released 17 volumes up until December 2020.

A spin-off manga called as Salty Road has been illustrated by Tali has been released. This manga focusses on Takao, I-402 and Zuikaku during their conquest of Yokosuka. This series began in Young King OURs magazine from October 16, 2014.

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