Ghost Line Tokyo

Lights suddenly go out People in Tokyo began to disappear out of thin air one after another indiscriminately, leaving only the victims' clothes scattered in place. Monsters roam the streets at night harvesting survivors. Foreign student Lin Fang accidentally got a Tang sword that can kill ghosts and a book that can refine ghosts. How can he survive in this apocalyptic city? Is Kayako just a monster? High technology versus supernatural? Lin Fang just wanted to keep himself and his friends alive.