This project involved the development of Motona Beach in Kyonan-machi, Awa-gun, Chiba Prefecture, and a demonstration event, utilizing Chiba Prefecture's "Project to Promote High Value-Added Tourism Content." The new use of the beach after the summer high season was named "Seaside Time," and the project was planned and implemented from September to November 2022. The special event held on November 12th and 13th offered new seaside experiences, including the first and largest participatory sky lantern and candlelit night in the Uchibo region, upcycled art using local waste materials such as driftwood, and gourmet food trucks showcasing the charms of Uchibo, attracting many visitors. Our company spearheaded the entire process, from administrative work for the application to Chiba Prefecture, planning, promoting the event's demonstration experiment (planning, concept design, setup, operation, and promotion), effectiveness verification, and reporting.