Invisible Farewell

The protagonist, Lin Xiaoman, is 23 years old and works as an undertaker in a funeral home. She has an unknown ability - by touching the relics of the deceased, she can see the most regretful thing in their life (not the cause of death, but the regret - unspoken words, unfulfilled promises, unreconciled relationships). She began to quietly help these deceased people "make up for their regrets", such as sending a letter to their relatives on behalf of the deceased and returning an old item. But when three family members of the deceased who came to her to "see the relics" disappeared one after another, she found herself involved in a larger conspiracy.