Ouju: Isle of the Accursed Coming to Steam

TOKYO, JAPAN – August 5, 2026.

Shiravune is pleased to announce that Ouju: Isle of the Accursed from the developers at 
CLOCKUP will be coming to Steam!
The game is a dark mystery visual novel that follows two curse-wielding shamans, Kan Togetsu and Shuzou Fuminari, as their fates intertwine on a remote island haunted by decades of violence and bloodshed.
Set on the secluded island of Sarubotoke in Japan's Seto Inland Sea, the story unfolds amid a brutal struggle between the island's ruling family, criminal organizations, and assassins who kill through ancient cursecraft. As long-buried secrets begin to resurface, a decades-old curse lurking beneath the island threatens to consume everyone caught in its wake.
Featuring two interconnected story arcs, full Japanese voice acting, and a cast of memorable characters, Ouju: Isle of the Accursed delivers a chilling tale of murder, curses, and psychological suspense where every choice brings the truth one step closer.
As of August 5, the game is now available for wishlisting on Steam!
Steam: https://store.steampowered.com/app/4532260?utm_source=enpr
Johren (18+): https://www.johren.games/games/download/ouju-isleoftheaccursed-en-zh/

INTRO
The year is 2019—a year where two eras, Heisei and Reiwa, intersect.
In the Seto Inland Sea, the island of Sarubotoke has discreetly flourished as a den of prostitution ever since the war.
On one side is the Futatsuguri clan, the most influential family on the island that has been running its pleasure industry since the Showa era.
On the other is a motley group of four gathered from different corners of the underworld, each having crossed to the island for their own reasons.
And on both sides, a cursemonger—shamans who perform assassinations via cursecraft. The perfect crime in the modern age.
Set against the backdrop of this lawless island, a battle of wills unfolds.
And behind it all, a terrible curse as old as the war itself has been lurking in the shadows for 70 years.

CHARACTERS
Kan Togetsu
Voice: Uzuki Inari
Kan Togetsu is a rogue shaman hired by the Arai Group, who curses people to death for a living. [a]
This middle-aged man gives off a somewhat listless impression and adopts a cool and breezy attitude.
He seems to have had some kind of connection to the Futatsuguri family, but he refuses to speak much about his past.

Shuzou Fuminari
Voice: Nikoichi!!
Shuzou Fuminari is a shaman allied with the Futatsuguri family, who curses people to death for a living.
This forty-something man is rather sarcastic and speaks with a cynical tone and attitude.
Although it has been several decades since he lost his childhood teacher Enju, he is unable to let her go.

Tamayo Futatsuguri
Voice: Murasaki Fujino
Tamayo Futatsuguri is the next in line to succeed the Futatsuguri family—the island's wealthy but cursed bloodline.
This young lady is wise and compassionate, and she manages the household in place of aging, bedridden father, Yoshinobu. 
Even so, she holds a distaste for the ill fates that revolve around her bloodline and curses in general.

Shinobu Higa
Voice: Tokio Aoi
Shinobu Higa is a freelance hitman hired by the Arai Group to cross over to Sarubotoke to achieve a certain objective.
This woman is a dangerous maverick, but hides a gentle heart deep inside.
Tattooed on her back is the image of a hellish oni, but its origin remains a mystery.

Himena Iguchi
Voice: Minami Imaya
Himena Iguchi is the most sought-after escort in King's Castle, a brothel in Sarubotoke's red-light district.
She came to the island from Tokyo, hearing rumors of lucrative pay.
While relaxed and easygoing, her gorgeous looks and stunning figure never fail to turn heads.

Kano
Voice: Tabeko Watame
Kano is one of the four who cross over to Sarubotoke to achieve a certain objective.
Her current "guardian" is Zenjiro Arai, who she affectionately refers to as "Uncle".

PRODUCT INFORMATION
Title: Ouju: Isle of the Accursed
OS: Windows
Players: Single-Player
Developer: CLOCKUP
Publisher: Shiravune
Languages: English, Traditional Chinese, Simplified Chinese
PLATFORMS
Steam, Johren (18+ Adult Version), Other Platforms TBA
PRICING DETAILS
TBA

ABOUT SHIRAVUNE
Shiravune is a Tokyo-based localization team dedicated to bringing Japanese games to fresh audiences in English and Chinese. We work with developers large and small to help them deliver their stories to players around the world. Since our founding in 2019, it has been our pleasure to expand our catalog to include the seminal 90s dating sim Dōkyūsei: Bangin' Summer, the crossdressing rom-com Otome * Domain, the hyperkinetic rush that is Marco & The Galaxy Dragon, PC ports of the acclaimed Utawarerumono series of story-driven tactics RPGs, and much more! Find our games primarily on Steam and Johren, or join us on X and Discord for the latest announcements.

Steam Publisher Page: https://store.steampowered.com/publisher/shiravune
X: https://x.com/shiravune
Discord: https://discord.gg/qBmrqDy
Website: https://shiravune.com/

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