Prelude,A History and Timeline of the Goryo Peninsula

Written by Park Jaeseop, Head Scholar of the Kingdom of Goryo,the Keeper of the Royal Library and Grand Tutor of Hall of Worthies.

a/n it's the world book of my previous fanfic:
https://www.wattpad.com/myworks/162872329-the-twelve-faced-moon-a-loona-fanfiction

Enjoy!