Chikuma Hyoron Nyumon 2nd Edition & Chikuma Hyoron Sen 2nd Edition - 2 Book Set. Chikuma Shobo. Basic Essence of Contemporary Thought for High School Students. With Answers. The covers appear stained due to the design, but the inside is clean with no writing. Shipping will be via Rakuraku Mercari/Yuyu Mercari.