Saturday, November 25, 2006. The central issue that has been discussed in this chapter was modern material culture as a recently targeted market. Especially teens in the United States and Japan both participate in it. Posted by NOZOMI @ 10:28 PM 1 comments. Wednesday, November 08, 2006. The central issues that have been discussed in this chapter were the difference between American and Japanese school such as hours of classes and relationships between teachers and students. Wednesday, October 25, 2006.