Here is The Descending Moon at the Foot of the Mountain chapter 00b. The prologue is divided into three chapters.
Batoto manga reader link is here:
http://bato.to/comic/_/comics/the-descending-moon-at-the-foot-of-the-mountain-r20475
The download link is here:
http://www.mediafire.com/file/vdbmcrtgndoch4n/moon+00b.zip