Demon Slayer: Kimetsu no Yaiba This is a set of 13 books, including volumes 1 through 12 and volume 16. All books were purchased new. Volumes 8 and 9 got wet, and when they dried, there were stains and warping. See photos 5 and 6. There are no tears. Volume 8 has some dirt. The other volumes do not have any noticeable stains, but please refrain from purchasing if you are overly concerned about the condition. Thank you.