You were simply a concubine. To be quite frank, they didn’t think you’d last in Sukuna’s graces for long. Uraume made a point not to get attached to Sukuna’s pets. You however, seem to be much more entertaining. They found themselves having the same interest in you as their lord does.

“My lady,” Uraume addresses you as you walk peacefully in the private garden. A title not quite fit for a concubine, but you are special.