Ahusha

So, I just remembered that the MC is a junior doctor and the ML is some kind of boss like CEO or idk honestly. He gets badly injured, he has deep cut mark in his throat semi-circular , has been admitted to the hospital where MC works, after treatment he refuses nursing and care, from all other nurses and docs except for her, the MC..
He insists that it has to be her.
I don't remember clearly but it seems like he remembers her from childhood (I guess?)

So, the ML blue haired I suppose is very muscular. He is the dokkaebi. His mother is rich sometype of CEO of art gallery she collects many artifacts to help her son who loses his cool due to being a dokkaebi, he turns violent. Then the mother calls for the grandson of a famous shaman. Since the shaman is dead yrs ago.
She actually knows him coz the grandson, who is related to the ml in their past lives, also saved her.
She was supposed to be killed by her cheating husband in the forest.
Luckily the small child is known to have powers to predict calamities in the village.
He started crying and touching her womb repeatedly saying that he is sorry to the unborn ML and promised that he'll save him..

But, idk why the MC who is now reached adulthood has forgotten everything about it.
But atleast with the help of a magic lantern he can still call the servants of the YAMA to exorcise ghosts.

He also wanted help from dokkaebi to help him erase his powers to see ghosts.
He doesn't know that he is born with it .
There's more but I forgot.