Death has her second in command, an entity who has been in charge of taking the souls when it's the right time.  Moonbyul is the general shinigami  for the last 2500 years. She never interacted with a living creature because her soldiers are the ones who get down to Earth. Until Death's right arm sees the light of a human from up there and she gets curious about this person . What happens when the shinigami Moonbyul walk on Earth and is seen by the human Yongsu

More than over three decades Shinigamis had been lostly searching for the Crystal of Life which is described to be an object that is the source of living for the other side of the world including the four clans: Tengu, Kitsune, Inugami and Bakeneko. The so called Empire of the Yokai. Shinigami are devoted as the protectors of those four clans. 

How hard is it to say I love you?   She has been abandoned, left behind and forgotten by all those who she cared about most and all the people who cared about her too as one by one they were claimed by death. Bec