This is a list of all the arcs so far in the Sakamoto Days series.
Note: Some story arcs are fan-made or community-made names to better organize the series. They are not official names.
So far, the only unofficially named arcs are the Bangkok Arc and New JAA Arc.
Having long retired, the once most feared hitman in the world spends his days running a shop with his wife. Looking to get him back into the game, Shin goes to pay him a visit and the two later rescue a triad girl called Lu who starts working at their convenience store. Relentlessly pursued by assassins and bound by a promise to Hana, the Sakamoto's take a trip to Sugar Park where they'll meet some old and dangerous acquaintances.
Lu is mistakenly kidnapped by scientists from the Lab, so Sakamoto and Shin rush to save her, along with their new friendly sniper Heisuke. As they make their way down through the base fight after fight, they'll soon discover that a mysterious person wearing a deer mask is the true orchestrator and he's forcing the scientists to work for him. Even the Order, the elite of the assassin world, are tasked to stop him.
After the Sakamotos engage Wutang in a gambling competition, they discover that fourdeathrowprisoners have been freed and are on a rampage. In the hopes of getting more info about Slur, they chase them down, along with the Order. In the end, it will be Slur who'll come to them.
With the discovery that Slur was a student called Uzuki at the JCC ten years ago, Sakamoto and Shin take the exam to enter the assassin school, this time directed by the legendary filmmaker and Order member Kanaguri. As they make allies and enemies along the path, someone will try to sabotage them.
Now finally in the JCC, Sakamoto and Shin look for the Database containing Slur's info while Uzuki sends out henchmen to get in their path. Meanwhile the Order retraces the steps of a former Order founder, Satoru Yotsumura, whose son is a prodigy at the JCC.
Sakamoto is firm on travelling alone to fight Slur, but when Shin refuses to accept no as an answer, Sakamoto narrates his past at the JCC and his two friends Nagumo and Rion. They get sent on an impossible mission, along with Uzuki, for being troublemakers and they'll face the fastest assassin alive, Kindaka. They defeat him and Kindaka decides to recruit them for a job to protect the wife and daughter of the JAA chairman.
Sakamoto accompanied by Shin, Heisuke and Amane head to Bangkok to find Slur and stop Akira. Heisuke will meet and befriend Hyo, but their lives will be put on the line when twoof Uzuki's Al-Kamar friends reach out to help him in his plans.
Kashima reveals that Uzuki will try to murder Asaki and so Sakamoto tries to get a ticket for the exhibition but the legendary order sniper Kamihate won't let them. Finally inside, chaos will unleash as Slur's group, the Order and Sakamoto's family try to defeat their opponents. When Uzuki's plan to kill Asaki fails, the situation escalates even further.
Sakamoto and Nagumo hide because of their newly placed bounties, but since the Order is recruiting newmembers and Uzuki is decimating the JAA henchmen thanks to Takamura, Sakamoto resumes training under Kindaka while Shin and Heisuke willingly get thrown in the JAA Jail to meet a skilled fortune teller who'll help the former with his ESP. As they make their way down the prison, Shin will have to come terms with his past after facing an inhuman opponent.
With Asaki finally taken down, Uzuki takes over the country and gives every citizen a gun and three bullets, unleashing chaos. With society on the brink of collapse, Sakamoto and his allies rush to stop Uzuki, along with some members of the New Order who decide to betray him. ALthough, Uzuki too has recruited powerful soldiers to lead the revolution.
