A Terrified Teacher at Ghoul School!

A Terrified Teacher at Ghoul School! (妖怪学校の先生はじめました！) is a supernatural comedy manga series written and illustrated by Mai Tanaka. It began its serialization in the GFantasy manga magazine November 18, 2014. Yen Press has licensed it for release in English, released to America in December 19th, 2017.

Plot
Haruaki Abe is not the bravest person in the world. In fact, he's so cowardly, grade school children push him around, which has really made it hard for him to do his dream job: being a teacher. But luckily, a family friend hooks him up with a job teaching at Hyaaki Academy. But it's going to be way more than Haruaki expects it to be when he finds out on his first day that this is no ordinary school. It's a high school for yokai, filled with students and teachers who are all sorts of terrifying. It's going to take a will of steel to work here, but fortunately, Haruaki has a secret up his sleeve to help him out as he's pushed to his limits everyday teaching (and surviving) his yokai students.