I Entered the Demon Slayer Division with My Pair of Yin and Yang Eyes

Tang Lan woke up from the coffin faintly. But he found himself in the body of a young policeman. This world is filled with monsters. Food-stealing rats, sinister spirits, ghost relatives, tiger monsters, nine-tailed foxes... Buddhism, Confucianism, Immortality, corpse chasers... Hey, goblin. I am a small catcher on the side of the Demon Slayer Department. I will be captured soon if you don't wait.