"Easy to Understand High School Physics Basics" Ken Kuwako Price: ¥1200 #KenKuwako #Ken_Kuwako #book #nature/physics It's relatively clean because I didn't use it much after I bought it. I checked it thoroughly and found no writing. However, this is a casual inspection, so there may be oversights. This is for students entering school in or after 2022. Please consider this as a used item.