Kyushu University is constructing Ito campus, which extends over Fukuoka city and Itoshima city. Three campuses named Hakozaki, Ropponmatsu, and Haramachi will be integrated into one at Ito Campus (Figure 1). The reloca- tion started in October, 2005. The relocation of the faculty of engineering, faculty of science and basic education programs are in progress. The multi-year relocation is expected to be completed in 2018.

The study area of this design workshop consists of planned area for future Kyushu University Academic City, and Maebaru northern area and Shima eastern area, of Itoshima City planning master plan. The objective of this design workshop is discovering the urban design possibilities of suburban campus life in the unique living environment of Itoshima. The workshop will also try to develop the urban design and architectural proposals to enhance the living environment of the students and employees of Kyushu University as well as the living environment of residents of the area. Itoshima city is known for its beautiful nature; mountains, beaches, and agriculture products. Yet, it is only 30 minutes from the center of Fukuoka city. Sunset beach concerts are held every summer, surfers come to surf, cyclists run around the peninsula, and fishing becomes popular. Now a days, people's life style has been shifting from "just working" to "enjoying hobbies". Itoshima could be the place for people enrich themselves with nature, without becoming totally disconnected from the "city". Residential apartments, single homes with view oceans are easily achieved in Itoshima. If it is in Tokyo, people need to commute at least two hours to reach this setting.

Multidisciplinary student teams from urban design, architecture planning, environment, building structures and the landscape will study the problems and potentials of the site. The environment evaluation tool CASBEE for community development will be used to evaluate solutions and the existing condition of the site. Estimating the BEE (Building Environmental Efficiency) to evaluate the environmental performance of buildings before and after the planning of the scheme is a unique learning process of this workshop.

In order to address the issues, the workshop began by carefully analyzing the city's potential for improvement and considering the views of both the residents and visitors. Kobayashi (2012) states, "Most of the time, we learned that the cities had many natural resources and assets that result from a long history of trade, transportation and cultural exchange and knowledge", in Karatsu Re Editing a Fragmented City.

However the cities lost much of its attractive characteristics because those resources and assets were fragmented. A truly attractive city is the one which encourages people to walk. In order to create a more walkable neighborhood, a new design approach can be applied to any city. Exchange may "re-edit" and reveal the city's historic character as a walkable city.

Kobayasi (2012) also stated, "The specific process of the workshop is divided into the following eight stages." As a member of the instructors with Prof. Kobayashi, we have followed the similar process. During the charrette period each group gathered data and formed conclusions about the situation. Each group then formulated a proposal scheme.

To present the society with a realistic scenario, not a fictional plan, it is important to study the legal and financial logistics, and the management for the long term vision, in order to implement final designs. This shows the comprehensive process of the workshop, in which participating students are divided according to their research topics. Because the students can sometimes lose focus on their target and make their collaboration difficult, it is quite important for the participants to regularly report on their process and receive advice from the instructors and experts. Kobayashi (2012) suggested at least four levels of design review process for exchanging ideas as listed below.

As a matter of course, energy consumption of cities and architecture play a large role in the global warming and depletion of energy resources. There are numerous issues to which the fields of architecture and urban design must respond to, that exist in regard to energy conservation and the reduction of carbon emissions. Against such a background, countries throughout the world have developed tools for evaluating the environmental performance of buildings, and these tools are recently displaying a rise in popularity.

Comprehensive Assessment System for Built Environment Efficiency (CASBEE) is a tool for evaluating the envi-ronmental performance of buildings developed uniquely in Japan by a sub-committee of the Institute for Building Environment and Energy Conservation under the leadership of Japan's Ministry of Land, Infrastructure, Transport and Tourism. The evaluation is carried out step-by-step in a question and answer format according to an instruc-tions manual. Final evaluations are displayed according to a five rank system of "S Rank" (Excellent), "A rank" (Very Good), "B+ Rank" (Good), "B-Rank" (Fairly Poor), and "C Rank" (Poor)according to the value of the Built Environment Efficency (BEE). BEE is determined by dividing the Environmental Quality (Q) by the Environmen-tal Load (L). Therefore, even if the architecture has a high environmental quality, the total score will be lowered if the environmental load is too heavy.

The Environmental Quality is ranked according to Indoor Environment (thermal comfort, lighting, etc.), Quality of Service (durability, adaptability, etc.) and Outdoor Environment on-Site (conservation, local characteristics, etc.). The Environmental Load is ranked according to Energy (natural energy utilization, efficient operation, etc.), Re-sources and Materials (water resources, reducing usage of non-renewable resources, etc.) and Off-site Environment (consideration of local and surrounding environment, etc.).

Evaluation by CASBEE remains fundamentally voluntary, and no legal obligation regarding notification of results exists, but usage nonetheless is observable amongst local autonomous bodies. Since CASBEE offers a broad perspective on design, it is useful not only as an evaluation tool but also as a design tool. Versions exist not only for architectural specialists, but also for use by municipalities and renovation. Use in Japan is on the rise and further developments are expected in the future.

The workshop held in Fukuoka, Japan (Summer 2017) was hosted by Kyushu University from August 4 to 12, in collaboration with Chinese Culture University (Taiwan), and Texas A&M University. The theme of this year's workshop was the planning of the core zone of Kyushu University Academic Research City, mainly at the Ito Campus of Kyushu University. During the workshop, the students were divided in eight teams each tasked with creating a future vision for one section of the district. In this eight day collaborative charrette workshop the participating undergraduate and graduate students of home (27 participants) and abroad (25 participants) worked under the guidance of 14 faculty members from the participating universities.

The Sustainable Design Workshop explored a multidisciplinary approach towards developing sustainable urban design and environmental strategies, considering Ito Campus neighborhood as a target area for creating a 21st century urban model. The students devised urban design and environmental strategies considering local context and international experiences for sustainable development of the area.

In the Kyushu University Academic Research City Plan, the two aspects are “building a regional science and technology system to promote exchange and creative activities of knowledge” and “formation of a comfortable space that serves as a stage for knowledge, dwelling and eternity”.

In addition, as a design concept, "Hotaru=Firefly" was proposed, which its focus is to integrate with the rich natural environment of the Itoshima region and the local community.The concept of "Hotaru=Firefly" is to distribute various activities and facilities around Kyushu University as well as provide collaboration with the environment, such as research & development, design, and SOHO (small office, home office) businesses.

Students challenged their own "Hotaru=Firefly", making use of the natural environment of each site and land use characteristics. As a result, we had wonderful and exciting proposals, even though it was done in such a short period of time.

These proposals will be introduced in the future, such as utilizing the traditional architecture, village design that responds to the ecology of fishing and fishing villages in Itoshima, and cooperating with the creative current Itoshima region lifestyle and community. I trust this material will be utilized effectively.

I take this opportunity to express gratitude to who involved with Itoshima projects, the hosted, Sustainable Ar- chitecture and Urban Systems of Kyushu University, the supported organizations, College of Architecture, Texas A&M University, Chinese Culture University (Taiwan), Itoshima City, all of the related people for the workshop, especially Prof. Takeru Sakai, Prof. Akihito Ozaki, Prof. Prasanna Divigalpitiya, Prof. Robert Warden, Prof. Wei-Lun Kuo for their help and support.