Gae-ddong

A slave who works at General Gwak Seongjin's household. Quick at thinking on his feet and learned to read and write by watching others. Learned how to use a sword from Soorim, but lacks talent as a fighter and instead has faster feet than anyone else for running away.

Lusts after women and always looks for a way to make his life easier. Wants to make Yeo-reum his wife one day, even though she only has feelings for Dol-swae.

(Source: the manhwa's character introductions)