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Sakamoto enjoys a quiet life in retirement with his family. But one day, an old colleague demands he return to the assassin world — or face consequences.

While out on an errand, Sakamoto and Shin encounter Lu Shaotang, the daughter of a mafia boss, who's on the run and targeted by twin assassins.

After learning of the huge bounty on Sakamoto's head, the crew tries to enjoy a family outing at the amusement park while fending off assassins.

With the poison-wielding hitman taken out, the Sakamotos head to their next attraction, where they're ambushed by Dondenkai Ltd's ultimate assassin duo.

Sakamoto goes all out in a fierce one-on-one duel with Boiled. Meanwhile, ORDER members are tasked with handling a serial case targeting assassins.

Hoping to win the million-yen prize, Team Sakamoto enters the shopping district's survival tournament and teams up with a completely clueless sniper.

While manning the store alone, Lu gets kidnapped by a mysterious group. Sakamoto and Shin pursue her but are halted by an invisible assassin.

To rescue Lu, Sakamoto and Shin infiltrate a top-secret lab seized by assassins. Meanwhile, in the prison cell, Lu meets someone from Shin's childhood.

In the depths of the Lab, Shin and Heisuke join forces to take down the invisible assailant, while Sakamoto engages in an intense battle against Kashima.

Exhausted from their battle, the crew heads to a local bathhouse but finds it too dangerous to relax. Later, a mysterious man arrives in search of Lu.

The crew faces Wutang in a high-stakes casino showdown to learn who issued Sakamoto's bounty. Meanwhile, X sends a group of vicious assassins their way

As Sakamoto gathers intel on the assassins targeting him, ORDER begins hunting the death row inmates. Later, Shin and Lu face a deadly assault.

Saw's attacks push Shin and Lu to awaken new abilities, turning the tables on the deadly killer. Meanwhile, Dump ambushes Osaragi at a temple.

The battles rage on even as the crew gets treated by Granny Miya! Minimalist threatens Aoi at the store while Heisuke clashes with Apart at Tokyo Tower.

Despite his inability to lose weight, Sakamoto faces off against Apart in a fierce showdown. Later, X reveals his dangerous plans for the assassin world.

While X and Gaku invade the JAA, a lone ORDER assassin stands in their way. Amid the chaos, Sakamoto discovers the shocking truth about X's identity.

Sakamoto decides to infiltrate his alma mater to get more intel on X. But first, he must conquer the sky-high requirements of the JCC entrance exam.

It's every assassin for themselves as the exam takes to the skies. While Sakamoto impresses fellow candidate Akira, Shin takes on the germaphobe Mafuyu.

Stage Three of the JCC exams begins as a trio of special applicants joins the fray. Toramaru, a devoted Sakamoto fan, immediately clashes with Shin.

Sakamoto discovers Akira's ties to an old friend. While Shin and Toramaru vie over their favorite assassin, X's secret plans throw the exam into chaos.

Shin teams up with Mafuyu, Toramaru and Kaji to take down a berserk Shinaya. Can these ragtag new allies work together to defeat their rampaging foe?

With the entrance exam behind them, Sakamoto and Shin can now continue with their original objective: infiltrating the JCC and obtaining clues on X!