First edition, 2020, Kawade Shobo Shinsha. The spine is discolored due to sun damage. There is no other significant damage. A 50th-anniversary edition with additional pages has also been published. What was in the 45th-anniversary edition but not in the 50th: - The manga "Atoll" → replaced with "Steel Queen" and "Seth Ivory's 21 Days" in the 50th anniversary edition. - The junior high school work "Time Tunnel" → replaced with the high school work "Battle". - Newly drawn cover illustration (the 50th-anniversary edition does not seem to have a newly drawn one). That's about it, I think.