SANKYO Co., Ltd. will release “reVtuber Shissou Anken” (reVtuber Disappearance Case), a reality-invading game co-produced with ARG creator SIM3, on Wednesday, June 17, 2026, at 19:00. The work is an ARG in which players investigate real websites to close in on the truth of the story; it is a sequel that presumes completion of the previous title “Vtuber Shissou Anken,” carrying the story into a new phase after the shocking ending players experienced in the first installment.

A Reality-Invading Game That Investigates Real Websites to Reach the Truth

This title is a reality-invading game (ARG) in which you investigate real websites to close in on the truth of the story. The player is asked by the Public Security Intelligence Agency to look into a top-secret case, pursuing the talent agency “Phos” and the organization lurking behind it. Using in-game tools such as hacking aids as clues, you decode the story right in your browser.

It all begins with a single investigation report brought to the Public Security Intelligence Agency. Over the fact of organized activity using entertainment work as a front, a covert operation of unprecedented scale is set in motion. Because this title is a sequel that presumes completion of the previous work “Vtuber Shissou Anken,” those who have not played it are encouraged to enjoy the first installment first. Full details can be checked on the official website.

The E-Book “Covert Operation Overview” Required to Play

Playing this title requires the e-book “reVtuber Shissou Anken: Covert Operation Overview,” which compiles materials from the Public Security Intelligence Agency. Sold on Amazon, it is priced at 3,500 yen (tax included) and runs 103 pages in Kindle format.

Across the 100-plus pages of materials, players can examine numerous official documents and use them as clues to delve into the darkness of the story. Beyond the information needed to play, it also includes a collection of short stories depicting the behind-the-scenes of the operation and the dramas of those involved, letting players immerse themselves in the world both before and after playing.

Future Plans and About SIM3 and 6417

“SIM3” is a creative unit that designs “story experiences as perception” with the web as its stage. Through works such as “Vtuber Shissou Anken” and “A Study on Kamioka Seiko (tentative),” it has proposed new forms of play that connect society and story. The latest information is shared on its official X.

“6417,” which handles co-production, is a content-IP creation brand by SANKYO. It produces experiences that step into story from the sense of unease and small dramas of everyday life, working with a variety of creators, and says it is actively taking on challenges in new genres such as ARG. It is expected to keep creating entertainment unbound by genre or format.

Impressions and Outlook

An ARG that solves mysteries by crossing between real websites and an e-book pairs well with streaming and theory-crafting culture, and is easy to spread as viewer-participation content. The structure of a sequel that presumes completion of the previous work assumes shared experience and an accumulation of theories within the community, making it well suited to leveraging the connections between players. SANKYO’s IP brand 6417 taking on ARG in earnest is a development worth noting as a new form of narrative experience from an entertainment company.

Source: PR TIMES