A two-book set by Yasuo Tanaka, including literary explorations. - Author: Yasuo Tanaka ※ "Bokutachi no Jidai" (Our Times)... Shinchosha Bunko, first edition, with afterword ※ "Kankaku no Rinrigaku" (The Ethics of Sensation)... Kadokawa Bunko, first edition, with afterword Purchased at a bookstore and stored at home for a long time. They are in good condition for old books.