CuriousKorean writes...

Mr. Greg Weisman,

this is not a question, I just would like to recommend three books to you if you want to understand Korean culture and Korean stories. I apologize if this is unwanted information. Maybe I am already telling you what you know.

Barbara DeMick has written Nothing to Envy.

The Cleanest Race by Myers will be relevant because of the Pukhan clan's location...probably. I think.

Most of all, for the mythology,

Ilyeon (2006) Overlooked Historical Records of the Three Korean Kingdoms, translated by Kim Dal-Yong. Jimoondang: Seoul, Korea. ISBN 89-88095-94-4
Ilyon (1972; 2006) Samguk Yusa: Legends and History of the Three Kingdoms of Ancient Korea, translated by Tae-Hung Ha and Grafton K. Mintz. Yonsei University Press: Seoul, Korea. ISBN 1-59654-348-5