#12

The listing for this book on Kodansha's website says it contains reprints from Monthly Afternoon #7/2000 to #3/2001 but that the contents have been adjusted. Probably one issue during that time did not have a chapter in it or two chapters were combined into one, but which one is unknown at this time. (アフタヌーン』２０００年７月号～２００１年３月号に掲載された作品に描き下ろしを加えて収録) https://kc.kodansha.co.jp/product?item=0000030181