Maebashi Design Commission (Headquarters: 2-1-6 Honmachi, Maebashi City, Gunma Prefecture, Representative Director: Keiichi Uruuga, URL: https://www.maebashidc.jp), QON Inc. (Headquarters: Freund Mita 2F, 2-14-5 Mita, Minato-ku, Tokyo, Representative Director: Takashi Takeda, URL: https://www.q-on.com), and Forum8 Co., Ltd. (Headquarters: 2-15-1 Konan, Minato-ku, Tokyo, President: Yuji Ito, URL: https://www.forum8.co.jp) will jointly implement the "MAEP" participatory town development digital twin project, where dialogue continuously updates the vision of the future city. This project aims to realize the social implementation of a new digital twin (※) that fosters co-creation of a future city through citizen participation, by collecting and analyzing dialogue from diverse stakeholders such as citizens, businesses, and visitors in Maebashi City, and visualizing the results on a 3D city model. It has been developed as a PLATEAU 3D city model use case and has also been adopted for the Ministry of Land, Infrastructure, Transport and Tourism's "Fiscal Year 2026 Support Project for Building Urban Space Information Digital Infrastructure." In this project, the three organizations, each with their own expertise, will collaborate to promote the realization of a circular town development platform that continuously reflects citizens' voices in the future city model. Maebashi Design Commission will be responsible for dialogue with citizens, community building, and designing questions related to town development through the operation of the participatory platform "MAEP (Maebashi ENGAWA Platform)." QON will leverage its expertise in online community management to analyze dialogue and behavioral logs, visualize values, and structure data for use with generative AI. Forum8 will focus on building the future city simulation environment "MAEBASHI2099," visualization, and developing an immersive interactive system by utilizing the PLATEAU 3D city model and VR/digital twin technologies.