Commemorating 80 Years Post-War: 'Cornerstone of Peace' Recreated in the Metaverse—Released March 26, 2026
Okinawa Prefecture and Cluster, Inc. have released the 'Cornerstone of Peace Metaverse,' a 3D digital twin of the memorial in Itoman City inscribed with the names of over 240,000 war victims. This platform allows users worldwide to experience the memorial, search for inscribed names, and participate in peace education, overcoming physical and temporal constraints.
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- 📰 Published: March 28, 2026 at 01:09
- 🔍 Collected: March 28, 2026 at 21:59 (20h 49m after Published)
- 🤖 AI Analyzed: April 15, 2026 at 04:31 (414h 31m after Collected)
Okinawa Prefecture (Governor: Denny Tamaki) and Cluster, Inc. (Headquarters: Shinagawa-ku, Tokyo; CEO: Naoto Kato; hereafter "Cluster") will release the "Cornerstone of Peace Metaverse" to the public on March 26, 2026. This project recreates as a 3D digital twin the "Cornerstone of Peace" (Heiwa no Ishiji), a memorial located within Peace Memorial Park in Itoman City where the names of over 240,000 individuals are inscribed.
Moving forward, we will actively collect feedback from users and strive to make improvements to provide even better services.
※Details regarding feedback collection will be announced on the prefectural website (https://www.pref.okinawa.lg.jp/heiwakichi/jinken/1008269/1008287/1039215.html).
■ Background: 80 Years Post-War and the Challenge of Passing Down Memories
The "Cornerstone of Peace" is a memorial that inscribes the names of those who perished in the Battle of Okinawa and other conflicts, regardless of nationality, military status, or civilian status. Located in Peace Memorial Park in Mabuni, Itoman City, at the southernmost tip of Okinawa Island, it is laid out in a radial arc around the Plaza of Peace on a 17,900-square-meter site. Since its unveiling in 1995, new names have been added annually, and more than 240,000 names are now inscribed. Many people visit the site every year on "Irei no Hi" (Memorial Day) on June 23.
■ Highlights of the "Cornerstone of Peace Metaverse"
Inscription Search: In coordination with the Cornerstone of Peace internet search system, users can automatically travel to the specific location where a searched name is inscribed.
Peace Flame: Around the Peace Flame, users can view live footage from the observation deck of the Okinawa Prefectural Peace Memorial Museum and see actual photos of the site.
Okinawa Prefectural Peace Memorial Museum Special Exhibition Room: In the archive area, which recreates the special exhibition room within the museum, users can view more detailed explanations of the Cornerstone and exhibitions regarding the Battle of Okinawa.
Around the Hill of Peace: In the event area, which recreates the area around the Hill of Peace, in addition to introducing peace education content, we plan to utilize it as a live viewing venue during events such as Memorial Day.
◇ Access from Smartphones and Walk Around with Avatars
In the metaverse, users can access via smartphones or PC browsers and operate avatars to walk through the virtual park. It meets needs such as "I want to show my grandchildren their grandparents' names" and "I want to visit the cornerstone of my hometown from overseas."
■ 3 Technical Features of the "Cornerstone of Peace Metaverse"
1. "Point Cloud Archive" that Preserves the Local Landscape as Is: The magnificent landscape of the Cornerstone of Peace was recorded as high-definition point cloud data. Space data, which is originally very large, has been converted and optimized to a low capacity using Cluster's proprietary platform infrastructure technology. This realizes a smooth spatial experience from smartphones and PCs while preserving the local scenery as it is.
2. Digital Twin Space Accessible Simultaneously from Around the World: With Cluster's large-scale concurrent connection infrastructure, hundreds to thousands of people can share the same 3D space simultaneously. It provides a place for remembrance and learning that transcends the constraints of location and time, such as peace education in school settings, memorial services from afar, and simultaneous participation on Memorial Day (June 23).
3. Integration with External Systems: This space possesses high versatility as a platform capable of flexibly linking with external servers. By seamlessly connecting with systems such as the name search system and peace education databases, we have enabled experiences that are difficult in physical space, such as searching for a specific name among the 240,000 inscriptions and moving directly to the location of the corresponding stone monument. We can provide practical peace education content that goes beyond mere 3D reproduction and viewing.
[How to Participate]
1. Download the "cluster" app: Please download the "cluster" app in advance from your smartphone, tablet, PC, or dedicated VR equipment. Download URL: https://cluster.mu/downloads
2. Account setup and basic operations explanation: Configure settings such as the name displayed within the app. After setting up your account, you will move to a practice screen that also explains basic operations.
3. Access the "Cornerstone of Peace Metaverse": Please access via the link buttons below or the URL listed at the bottom.
(Entrance, Cornerstone of Peace Area, Special Exhibition Room Area, Event Area links provided)
■ Service Overview (Table summary of Project Name, Release Date, Fees, Compatible Devices, and URLs included in the original)
■ About Cluster, Inc. (Reference Information)
Cluster, Inc. is a technology company that develops and operates one of Japan's largest metaverse platforms with a vision to "create an OS for co-creative spaces that connect all people, things, and technologies." Centered on its proprietary large-scale concurrent connection infrastructure, it provides co-creative space infrastructure that fuses real and virtual. Adopted by diverse industries such as manufacturing, construction, education, international conferences, and entertainment, it supports multi-devices such as smartphones, PCs, and VR. It builds real-time spaces where up to 100,000 people can connect simultaneously and has accumulated a track record in numerous IP contents and large-scale events. It continues to grow as a BtoB platform that combines high reliability and scalability, realizing both commercial use and scale.
Furthermore, it has an in-house laboratory, promoting R&D such as user behavior analysis, virtual AI agents, and 3D production automation by AI. It also actively engages in joint research and demonstration experiments with external research institutions and universities, accelerating the evolution of metaverse technology.
Fusing technology and creative power, and pioneering the future of virtual experiences—Cluster continues to build the next generation of social infrastructure.
https://corp.cluster.mu/
▼ Owned media where you can see the forefront of Cluster, Inc.'s corporate business
https://metaversebiznews.cluster.mu/
Moving forward, we will actively collect feedback from users and strive to make improvements to provide even better services.
※Details regarding feedback collection will be announced on the prefectural website (https://www.pref.okinawa.lg.jp/heiwakichi/jinken/1008269/1008287/1039215.html).
■ Background: 80 Years Post-War and the Challenge of Passing Down Memories
The "Cornerstone of Peace" is a memorial that inscribes the names of those who perished in the Battle of Okinawa and other conflicts, regardless of nationality, military status, or civilian status. Located in Peace Memorial Park in Mabuni, Itoman City, at the southernmost tip of Okinawa Island, it is laid out in a radial arc around the Plaza of Peace on a 17,900-square-meter site. Since its unveiling in 1995, new names have been added annually, and more than 240,000 names are now inscribed. Many people visit the site every year on "Irei no Hi" (Memorial Day) on June 23.
■ Highlights of the "Cornerstone of Peace Metaverse"
Inscription Search: In coordination with the Cornerstone of Peace internet search system, users can automatically travel to the specific location where a searched name is inscribed.
Peace Flame: Around the Peace Flame, users can view live footage from the observation deck of the Okinawa Prefectural Peace Memorial Museum and see actual photos of the site.
Okinawa Prefectural Peace Memorial Museum Special Exhibition Room: In the archive area, which recreates the special exhibition room within the museum, users can view more detailed explanations of the Cornerstone and exhibitions regarding the Battle of Okinawa.
Around the Hill of Peace: In the event area, which recreates the area around the Hill of Peace, in addition to introducing peace education content, we plan to utilize it as a live viewing venue during events such as Memorial Day.
◇ Access from Smartphones and Walk Around with Avatars
In the metaverse, users can access via smartphones or PC browsers and operate avatars to walk through the virtual park. It meets needs such as "I want to show my grandchildren their grandparents' names" and "I want to visit the cornerstone of my hometown from overseas."
■ 3 Technical Features of the "Cornerstone of Peace Metaverse"
1. "Point Cloud Archive" that Preserves the Local Landscape as Is: The magnificent landscape of the Cornerstone of Peace was recorded as high-definition point cloud data. Space data, which is originally very large, has been converted and optimized to a low capacity using Cluster's proprietary platform infrastructure technology. This realizes a smooth spatial experience from smartphones and PCs while preserving the local scenery as it is.
2. Digital Twin Space Accessible Simultaneously from Around the World: With Cluster's large-scale concurrent connection infrastructure, hundreds to thousands of people can share the same 3D space simultaneously. It provides a place for remembrance and learning that transcends the constraints of location and time, such as peace education in school settings, memorial services from afar, and simultaneous participation on Memorial Day (June 23).
3. Integration with External Systems: This space possesses high versatility as a platform capable of flexibly linking with external servers. By seamlessly connecting with systems such as the name search system and peace education databases, we have enabled experiences that are difficult in physical space, such as searching for a specific name among the 240,000 inscriptions and moving directly to the location of the corresponding stone monument. We can provide practical peace education content that goes beyond mere 3D reproduction and viewing.
[How to Participate]
1. Download the "cluster" app: Please download the "cluster" app in advance from your smartphone, tablet, PC, or dedicated VR equipment. Download URL: https://cluster.mu/downloads
2. Account setup and basic operations explanation: Configure settings such as the name displayed within the app. After setting up your account, you will move to a practice screen that also explains basic operations.
3. Access the "Cornerstone of Peace Metaverse": Please access via the link buttons below or the URL listed at the bottom.
(Entrance, Cornerstone of Peace Area, Special Exhibition Room Area, Event Area links provided)
■ Service Overview (Table summary of Project Name, Release Date, Fees, Compatible Devices, and URLs included in the original)
■ About Cluster, Inc. (Reference Information)
Cluster, Inc. is a technology company that develops and operates one of Japan's largest metaverse platforms with a vision to "create an OS for co-creative spaces that connect all people, things, and technologies." Centered on its proprietary large-scale concurrent connection infrastructure, it provides co-creative space infrastructure that fuses real and virtual. Adopted by diverse industries such as manufacturing, construction, education, international conferences, and entertainment, it supports multi-devices such as smartphones, PCs, and VR. It builds real-time spaces where up to 100,000 people can connect simultaneously and has accumulated a track record in numerous IP contents and large-scale events. It continues to grow as a BtoB platform that combines high reliability and scalability, realizing both commercial use and scale.
Furthermore, it has an in-house laboratory, promoting R&D such as user behavior analysis, virtual AI agents, and 3D production automation by AI. It also actively engages in joint research and demonstration experiments with external research institutions and universities, accelerating the evolution of metaverse technology.
Fusing technology and creative power, and pioneering the future of virtual experiences—Cluster continues to build the next generation of social infrastructure.
https://corp.cluster.mu/
▼ Owned media where you can see the forefront of Cluster, Inc.'s corporate business
https://metaversebiznews.cluster.mu/