Lady Yi-Rang is a female Chachaoong acquainted with Ignatio and Ella. Very little is known about her but she visiting Ignatio on the sly, when Bi Gak was away, so she could warn him about affliating with the unstable Chachaoong. Yi-Rang very obviously has romantic feelings for Ignatio, frequently fainting or falling when she is near him, but he is completely oblvious to her feelings (despite that it's obvious to Leon).
She appears to have some sort of "seeing" ability though it's unclear precisely what this ability entails. She dresses in an extremely old fashioned way and in very ornate clothing, with an elaborate hair-piece and jewelry.