A doctor and inventor in the Water Kingdom, a relatively recent inhabitant to the realm. He appears cordial and at times comic, but is perceptive and secretive. He appears to have his own motives regarding Habaek and Mura warns Soah not to trust Tae-eul-jin-in so readily. It is revealed that he is the one who taught Nakbin how to put the curse on Habaek and only the person who placed the curse may be the one to lift it. Thus every year, a bride is sacrificed so that the reincarnated Nakbin would be able to return to the water country and lift the curse. Habaek knows that if he demands this sacrifices from humans, he will be thought of as an evil god and be hated by the people. Nevertheless, Habaek is willing to bear the condemnation in order to see Nakbin again. To make sure that only brides who are Nakbin will enter the water kingdom, Tae-eul-jin-in has erected a barrier that so that any brides who are not Nakbin will not be able to enter but perish in the waves. This causes Soah to wonder how is it that she was able to enter the Water Country, despite the fact she is not Nakbin's reincarnation.
~from wikipedia