I'm Just a Ghost Constable, and You Want Me to Slay Buddha?

A struggling online writer unexpectedly stumbles into becoming a spirit officer. Is it simply bad luck, or is someone pulling the strings? He becomes brothers with Black and White Impermanence, drinks and sings with the King of Hell, and storms the underworld, battling the Ten Halls for the sake of his beloved. The darkest place in the world is not the underworld, but the human heart...