Fukigen na Mononokean – The duty of the morose guide who leads mononoke from one world to the next.
Hanae Ashiya voice actor Yuuki Kaji and Haruitsuki Abeno voice actor Tomoaki Maeno team up to perform the theme.
Akira Iwanaga (Tegami Bachi: Letter Bee) directs The Morose Mononokean, with Takao Yoshioka (Your Lie in April) on series composition for the Pierrot Plus production.