On July 13, 2025, at the JAXA Tanegashima Space Center in Kagoshima Prefecture, a special open-day event was held where Kajima exhibited its first booth as a company supporting rocket launches.

This annual event is held to deepen public understanding of rocket development and launches, as well as to introduce the Tanegashima Space Center. On the day of the event, special programs different from the usual exhibits were offered, including guided tours of the rocket launch site led by JAXA staff and a special lecture by the launch director of the H-IIA Launch Vehicle No. 50, which was successfully launched on June 29.

At the Kajima booth, the company introduced "Lunaglass," a lunar artificial-gravity habitation facility being developed through joint research with Kyoto University. Employees engaged in research on space architecture explained the importance of gravity in a way that was easy for children to understand, noting that "while water and air can be brought from Earth, gravity cannot," and describing how Lunaglass uses centrifugal force to create an environment close to Earth's gravity (1G). Children listened with bright eyes, captivated by the beauty of Lunaglass's design and remarks such as "1G is humanity's identity," while adults asked questions such as when Lunaglass might become a reality.

In addition, employees working at construction sites under Kajima's Kyushu Branch introduced the facilities that the company had been involved in constructing on Tanegashima, and distributed brochures and promotional items. The booth attracted approximately 800 visitors, making it a great success and providing participating employees with a valuable opportunity to interact with visitors and help them learn more about the construction industry and Kajima's initiatives.