Moja is an employee of the Mononokean and is the very first yokai Hanae encountered.

Ashiya has spent the first seven days of high school stuck in the infirmary because of a youkai attaching itself to him. He ends up asking the owner of a small tea room called the "Mononokean" for help. This is a tale involving the very morose owner of Mononokean guiding the youkai that happened to wander into this world go to the next world. 

(Source: Crunchyroll)

Ashiya has spent the first seven days of high school stuck in the infirmary because of a youkai attaching itself to him. He ends up asking the owner of a small tea room called the "Mononokean" for help. This is a tale involving the very morose owner of Mononokean guiding the youkai that happened to wander into this world go to the next world. 
 
(Source: Crunchyroll)
 
Note: Includes 1 extra chapter.

The second season of Fukigen na Mononokean.