On the last day of October I reccomend Demon Prince Enma. Demons are escaping from the underworld, and causing much havoc on the human population. Possessing both human bodies and artifacts alike, the demons are inconspicuously forcing people to commit grotesque murders. The task of exterminating the offenders lies with Demon Prince Enma, snow wielding Yukihime, an information gathering kappa, Kapaeru, and the talking witch hat Shapoji. This is the darker adult targeted version of the Prince Enma animated series. It hits a lot of the same morbid tones with tinges of lighter banter between the trio much like Requiem from the Darkness and the 1996Black Jack: The Movie. If your familiar with Go Nagai work, you won't be disappointed.