Hell's Paradise: Jigokuraku

• 1. Introduction

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  Hell's Paradise: Jigokuraku, a web manga by Yuji Kaku, begins with an execution that does not work. Gabimaru the Hollow, a ninja from Iwagakure, has been sentenced to die. Nothing the executioners try is able to kill him, because his body is far tougher than any ordinary human body. Gabimaru has a private explanation for this. He believes his love for his wife is quietly keeping him alive.

  Yamada Asaemon Sagiri, the executioner assigned to him, makes an offer. The Shogunate will pardon all his crimes if he finds the elixir of life in a legendary realm southwest of the Ryukyu Kingdom. The story takes place in the Edo period of Japan. Why would a government send condemned prisoners in search of an elixir? What waits in that realm, and who made it? And how did a creator come to write a man who cannot die?

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• 2. The Island of Shinsenkyo

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  Five expedition teams had already vanished on the island of Shinsenkyo when the Shogunate changed its approach. This time it gathered 10 death row criminals into what it called the Vanguard Party. Each convict is paired with a Yamada Asaemon executioner, who is authorised to kill the prisoner at any sign of escape. A pardon is granted only if the prisoner and the executioner both come back.

  Behind the island's horrors stands a hermit named Shufu, also known as Jofuku. He pursued the secrets of immortality through Shinsen thought. His experiments joined human and flower Tao, the Taoist energy, in an internal process called naitanho. The results were Lord Tensen and a group of almost immortal, androgynous beings called the Tensen. Shufu also hoped to create the elixir itself, named Tan, through a separate external process known as gaitanho.

  The Doshi, Shoshin and Hoko fill the island alongside the Tensen. The Doshi are sentient, monster-like beings who serve Lord Tensen as students, servants and soldiers. The Shoshin are nearly mindless, made by combining humans with animals, and exist to eliminate human intruders. The Hoko look human and act as observers and producers of food. Even the plants are predatory, and they threaten anyone who lands.

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• 3. An Enclosed Space

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  Yuji Kaku first imagined a very different story, one about children sent to a youth detention center and the lawyers who fought for them. Conversations with his editor led the two of them to drop that setting. They kept the underlying framework, which Kaku described as "several pairs of people whose interests aren't aligned being thrown into an enclosed space and forced to work together." He has always enjoyed the way human relationships change, and that is why the framework survived. He judged that Shinsenkyo could host any type of story and would be easy to write. It would also be more interesting, he explained, if a character "who isn't supposed to die" ended up in a near-death situation.

  In 2017, storyboards for the first three chapters reached the editorial staff of Shōnen Jump+. Hideaki Sakakibara had admired Kaku's art ever since Fantasma in Jump Square, and he volunteered eagerly. He became the second editor, starting with chapters two and three. Sakakibara saw the series as the "mainstream battle fantasy" that Shōnen Jump+ lacked, and he thought it could sell well in print.

  Sakakibara's one early worry was the crowded cast of prisoners, executioners and island creatures. He liked the idea of a Battle Royale-style story in manga. He feared, though, that pages would be split between too many characters, leaving little room to show the main characters' actions. He credits Kaku's talent for introducing characters quickly and simply, along with his drawing, for solving the problem. That crowded cast would later narrow, and Kaku found the story had a different lead from the one he started with.

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• 4. Two Protagonists

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  Kaku and Sakakibara mapped the plot in blocks of 10 chapters, which is one full volume. At first Kaku wrote Gabimaru as the sole protagonist, with the story built around his growth. As he wrote, the themes drifted toward the Middle Way, with its paradoxes and conflicts. He felt Sagiri should be the one to face them. In his words, "so for me, Sagiri became the protagonist of the latter half."

  The 2020s shaped both leads, even though the story sits in the Edo period. Kaku gave Gabimaru, with his extreme attachment to love, and Sagiri, with her worries about being a woman, the outlook of a modern person. His reasoning was direct: "Despite condemned criminals and executioners being difficult characters to empathize with, if they share our perspective, then we feel close to them, and they stand out as unique characters." This stood in contrast to an era with totally different ideas about ethics and human rights. Kaku also wrote details and backstories for every character, whether or not they appeared on the page.

  The character Shion changed after Kaku described him to Sakakibara. The editor pictured him as something like Kazuo Kiriyama from Battle Royale. After talking it over, Shion became the kind teacher seen in the manga, and the crazy personality went to Shugen instead.

  Yukinobu Tatsu, the author of Dandadan, worked as one of Kaku's assistants on the manga.

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• 5. Drawn for Phones

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  Shōnen Jump+ was the first digital home for any of Kaku's serials, and he drew with phone screens in mind. He made speech bubbles and text larger so they would read on a small display. He also drew double-page spreads in a way that kept a single page from feeling strange when viewed alone.

  Sakakibara gave Kaku free rein over the illustrations. He says the art was "extreme" from the very first chapter, which won readers over but made it harder for newcomers to step in. Kaku had once been a manga editor himself, so ideas passed between them easily. Kaku admitted that this habit had a cost. Thinking like an editor made him hold back creatively without realising it.

  Weekly serialization began on the 22nd of January 2018 on the Shōnen Jump+ app and website. It ended with the 127th chapter on the 25th of January 2021. Shueisha collected the chapters in 13 tankōbon volumes, released between the 4th of April 2018 and the 30th of April 2021. Shueisha also posted the series free in English on its Manga Plus app and website at the same time as the Japanese release. Special chapters appeared in Weekly Shōnen Jump on the 6th of August 2018 and the 10th of June 2019.

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• 6. Beyond the Page

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  Viz Media began publishing the manga in English on its website on the 17th of May 2018. Print editions of the 13 volumes followed from the 17th of March 2020 to the 15th of March 2022. On the 28th of October 2025, Viz released a box set holding all 13 volumes plus an extra book containing the "Forest of Misfortune" story. Since the 21st of October 2024, the series has also run in vertical scrolling format on the Webtoon platform.

  A comedic spin-off by Ōhashi began on Shōnen Jump+ on the 20th of January 2020. It ended with its 21st chapter on the 29th of June 2020, and the chapters were gathered into a single volume on the 4th of September 2020. A one-shot special went up on Shōnen Jump+ on the 8th of April 2023.

  Sakaku Hishikawa wrote a novel adaptation, published on the 4th of September 2019. A second novel followed on the 4th of April 2023. On the 30th of April 2021, Shueisha published a fan book with character profiles, concept art and new manga stories. It also includes an interview with Tatsuki Fujimoto.

  Kaku's manuscripts and illustrations went on show at Tokyo Manga Salon Trigger from the 3rd to the 9th of November 2018. A second exhibition ran at Tower Records in Shibuya from the 29th of August to the 22nd of September 2020, with collaborative goods designed just for the event.

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• 7. Screen and Stage

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  MAPPA produced the anime adaptation, and Kaori Makita directed its 13 episodes. It aired on TV Tokyo and other networks from the 1st of April to the 1st of July 2023. Crunchyroll streamed it worldwide outside of Asia. Netflix streamed it across the Asia Pacific region, excluding Mainland China, Australia and New Zealand.

  A second season was announced after the thirteenth episode aired. It adapts the "Lord Tensen" and "Hōrai" story arcs and aired from the 11th of January to the 29th of March 2026. The cast and staff from the first season returned.

  Gabimaru became a playable character in the Nintendo Switch game Captain Velvet Meteor: The Jump+ Dimensions in July 2022. In November 2025, Good Smile Company released Jigokuraku: Paradise Battle, a free-to-play role-playing survival game for smartphones and personal computers. Anime staff helped on the project. Akira Kindaichi supervised the scenario and Yoshiaki Dewa composed the music.

  A stage play ran at Hulic Hall in Tokyo from the 16th to the 26th of February 2023. A second production, Hell's Paradise -Final Chapter-, played from the 15th to the 25th of February 2024. It appeared at Theatre 1010 in Tokyo and at the TT Hall of the Cool Japan Park in Osaka.

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• 8. Readers and Critics

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  Publishers Weekly called the first volume "mysterious" and compared Kaku's illustrations to the work of manga artist Junji Ito. In its view, that gave the series an "unsettling" and "gruesome" charm. Leroy Douresseaux of Comic Book Bin gave the volume 9 out of 10. He ranked it among the best first volumes of a manga he had ever read. He said Kaku's art was "like taking some of the most shocking art from the legendary EC Comics' horror titles and multiplying it by the power of 10."

  Kiara Halls of Comic Book Resources called the first volume a "great, emotional bloodbath" and a possible breakout hit. She noted that the bond between Sagiri and Gabimaru is "of mutual respect formed by an emotional connection," not one of dominance or lust. At Anime News Network, Rebecca Silverman and Faye Hopper each gave the volume 3.5 stars out of 5. Silverman felt the series borrows familiar elements but turns them into "a story worth paying attention to." Hopper said the way the leads' struggles mirror each other is handled with "thoughtfulness and real power." Ian Wolf of Anime UK News gave the second volume 6 out of 10, praising the fights and Kaku's artwork. Amílcar Trejo Mosquera of Crunchyroll placed the series in Shōnen Jump's "Dark Trio" alongside Jujutsu Kaisen and Chainsaw Man.

  With 16,510 votes, the series placed eleventh in the Web Manga category of the 2018 Next Manga Awards, run by Niconico and Da Vinci magazine. It ranked fourth on Honya Club's list of recommended comics of 2018, built from a survey of 1,100 bookstore employees across Japan. In the 2019 edition of Kono Manga ga Sugoi!, it tied with two other series for sixteenth place among manga for male readers.

  By August 2018, it was already the most popular series on Shōnen Jump+. Circulation passed 1 million copies by June 2019 and reached 2.5 million by August 2020. It stood above 3.6 million by April 2021 and over 4 million by December 2022. By January 2024, the total topped 6.5 million. First-week sales of single volumes were 16,328 for volume two, 20,139 for volume four and 45,912 for volume five. The thirteenth and final volume sold 39,759 copies in its first week.

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