My Ghost Wife Sister

Lin Mo, an ordinary college student, discovered that there was an "invisible" sister in his family after his sister Lin Wan died unexpectedly. She stayed in the world in the form of a ghost. Not only did she retain the gentleness of her life, but she also gradually showed the ability to control Yin energy and predict danger. What's even weirder is that a yellowed ancestral marriage book suddenly appears, with the names of Lin Mo and "Lin from the Underworld" written on it. It turns out that her sister's death was not an accident, but was involved in the ancient contract between the Yin and Yang worlds. Lin Mo must complete the "ghost marriage" with his sister who turned into a ghost in order to unlock the family curse and reveal the truth about her sister's death.