The search for the tattooed convicts leads Sugimoto, Asirpa, and Shiraishi to the infamous Botaro the Pirate, a man with nearly superhuman swimming abilities. Tracking him down will test Sugimoto’s claim of immortality! Meanwhile, a serial killer stalks the back alleys of Sapporo—but is he another escapee from Abashiri prison, or someone else? The murders attract the attention of Lieutenant Tsurumi and Hijikata, and a deadly confrontation is building—but this time, who is the hunter and who is the hunted? -- VIZ Media

The serial killings in Sapporo turn out to be the work of the infamous Jack the Ripper, who fled to Japan after his murderous spree in London. After tracking him to the Sapporo Brewery, Sugimoto’s and Hijikata’s groups have teamed up to find him before Lieutenant Tsurumi and the 7th Division. Keiji Ueji, another tattooed convict, is also on the scene and may hold the final key to the code leading to the lost Ainu gold. As a skyrocket lights up the night sky, a violent confrontation is about to explode in the brewery! -- VIZ Media

Sugimoto and Asirpa (and Shiraishi too) have been reunited and head south across Karafuto with the goal of returning to Hokkaido. But after so much time apart and all that has happened, Asirpa’s feelings about the Ainu struggle have changed. Meanwhile, Lieutenant Tsurumi begins trying to decipher the code in the tattooed skins and sends a double agent into Hijikata’s group. But Hijikata is no fool, and engages in a battle of wits with Tsurumi. Regardless of who comes out on top, it is clear that only Asirpa holds the key to finding the Ainu gold. -- VIZ Media

Sugimoto and Asirpa reach Lake Kussharo near Abashiri prison at last! The time has come to put all their plans to break into the prison and meet Noppera-bo into action. Their nemesis, Lieutenant Tsurumi, as always, is one step ahead and has his own agents inside Abashiri. Tsurumi himself is on the way, with a contingent of troops and a gunboat to back him up! But if anyone can survive being surrounded by enemies and still keep Asirpa safe in this deadly conflict it’s Immortal Sugimoto! -- VIZ Media

On the trail of a hoard of hidden gold, Saichi “Immortal” Sugimoto and the Ainu girl Asirpa have already tracked down some of the escaped prisoners whose tattoos form a map to the lost treasure. But their search has caught the attention of a group of rogue Japanese soldiers from the legendary 7th Division. Their leader, the utterly cold-blooded and driven Lieutenant Tsurumi, will stop at nothing to find the gold. And Tsurumi is not the only formidable opponent Saichi and Asirpa must deal with—a former samurai who escaped with the prisoners is carving his own path to the loot. These enemies will put Saichi’s “Immortal” nickname to the test... -- VIZ Media

Asirpa’s adventure in Karafuto changed her feelings about not only her father, but also the Ainu struggle for independence. Sugimoto has come to realize something about his own feelings about Asirpa as well. If they’re really going to be equal partners, they’ll need to come to a new understanding. Once again on the run from Lieutenant Tsurumi, they head for Hokkaido. But the rogue officer isn’t about to give up. The pursuit once again leads into forbidding, frozen territory... -- VIZ Media

The pursuit of the hidden Ainu gold takes Toshizo Hijikata closer to the truth about Asirpa’s father...or does it? Sugimoto and Asirpa arrive in the town of Yubari just as Hokkaido glides into spring, but little do they know that their nemesis Lieutenant Tsurumi is also there with his men. Tsurumi has hired the psychotic taxidermist Yasaku Edogai in a ploy to deceive the other treasure hunters. Then Ogata, the rogue sniper, adds even more fuel to the fire when he enters the game... -- VIZ Media