TERRIFIED TEACHER AT A GHOUL SCHOOL (2017) DIGEST-SIZED TRADE PAPERBACK #12

In order to bring Nyuudou back to Hyakki Academy, Haruaki and the rest of Class 2-3 sneak into his house. However, they soon find their path blocked by a group of fearsome eye youkai, and they'll have to think quickly if they want to escape with their lives! Meanwhile, thanks to Tamao's friends, his path to Nyuudou's room is clear, but reaching him won't be so easy...