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Research on the Ouchi clan in the Late Middle Ages has been very active in recent years. However, there are few related studies on the actual activities of the Ouchi clan from ancient times to the early medieval period, and few areas have been elucidated. In this paper, therefore, we analyze the actual activities of the Ouchi clan in their early period by collecting fragmentary related historical documents dating back to the stage when they were called Tatara clan. As a result, it became clear how they expanded their power based on their activities in the central political world in the late antiquity, after the stage when they were active as provincial officials in Suo Province.

This paper reports on the content of the "Japanese Language Teaching Practicum" at Yamaguchi Prefectural University in the year of 2022. We also investigate how the trainees' "qualities and abilities required of Japanese language teachers [training]" (Japanese Language Subcommittee of the Council for Cultural Affairs, 2018) changed through the educational practice, and describe the trainees' growth and learning progress. Through this, we will verify the effectiveness of the Japanese language teaching practice at our university. In addition, based on the issues identified through this training, we discuss the design and management of future Japanese language education training at Yamaguchi Prefectural University.

This paper focuses on the Blue & Green Art Project, which has been implemented from 2020 to the present, in relation to the Agri-Art Festival, which was the premise of the project, and its activities on regional revitalization and development.The project focuses on symposiums and exhibitions of artworks, which are activities about regional revitalization and development by connecting the sea and land, while committing to the SDGs. In particular, the report discusses the works in the exhibition "A Journey of Fashion through the Sea," which was inspired by the symposium held in March 2022. For sustainable design, we will focus on the traditional Japanese clothing and dyeing and weaving techniques. The project focused on traditional Japanese clothing and dyeing techniques such as sakiori, tsuzure, saki-knitting, patchwork, and herb-dyeing for sustainable design. The project also included the upcycling of masks provided by the Ministry of Health, Labor, and Welfare before they were discarded, as well as oyster pipes and other flotsam collected from beach cleanups. The project also upcycled masks provided by the Ministry of Health, Labor and Welfare before they were discarded and oyster pipes that had washed ashore from beach cleanups. A sakiori weaving workshop was also held to help visitors feel the environmental issues of the sea and land as their own problems. The event was short-lived, but we hope that future activities will be more active and it was effective in raising awareness among the visitors as well as the organizers as a foundation for future activities.

The piece is a home-use step stool designed in consideration of the need for child safety. Step stools have been used in Japanese families since a long time ago for various purposes in daily living. Today, multipurpose stools such as foldable ones are commonly used. However, in terms of safety they have more dangerous parts than the conventional type. The concerns become particularly apparent whenever children use such stools. Therefore, to address such safety concerns we have designed a stool under the theme of a “child-friendly stool that ensures peace of mind for adults and guardians.”

This article explored the international understanding activities of Yamaguchi Prefectural University’s students and citizens of Yamaguchi city. The author examined this activity of providing quality education through active learning perspective, which is attracting attention as a method for improving the capacity respond to unexpected incidents.These activities were planned and performed by Yamaguchi Prefectural University’s students. As this activity was executed through a seminar, it was convenient to schedule them and create the necessary teams. After every activity, improvement points were developed for each team members, focusing on the division of roles within the teams, their communication, and their cooperation in information sharing. Interactive learning practices were noticed as an aspect of the relationship between students and regional residents. The students and the residents, collaborated by sharing their experiences and proficiency in digital skills, which increased their cooperation through active learning.

The author has been involved in the creation of clothing that incorporates the function of size adjustment as part of its design. At the same time, she has experimented with custom-made costumes and product development and sales of clothing and sundry goods. This paper discusses two of the author's creations, and examines the possibility of applying drawstring techniques and snap buttons for size adjustment. In addition, based on the relationship between the body and clothing found in the works of fashion designers, actual clothing sizes, and the size adjustment function of rental garments, the possibility of design using the size adjustment function of clothing is explored.

Yamaguchi Prefectural University offers a "CG Training" course to help students acquire the knowledge and skills to use CG software. In addition, this university is involved in various initiatives with external organizations as part of a regional cooperation, and the "foster parent system" discussed in this report is one such initiative. This paper reports on the process of the "Foster Care System Awareness Poster" project.