The Morose Mononokean

Genre: Yokai, Drama Synopsis: After enrolling in high school, the protagonist, Ashiya Hanae, experiences worsening physical condition due to yokai possession. To resolve yokai-related issues, he contacts the 'Yokai Exorcism' service advertised on a poster and meets Abe no Haruitsuki, the owner of Mononokean. To repay the 1 million yen exorcism fee he received from Abe no, Hanae starts working at Mononokean as Abe no's assistant. There's also an anime adaptation, and the manga is completed in 18 volumes. The Mojya Mojya appearing there is so cute.