Youkai Gakkou no Seito Hajimemashita!

Vol.1 Chapter 2: Hatanaka-sensei is a serious teacher?!
Vol.1 Chapter 1: Entrance Ceremony! Hyakki Academy!
Vol.1 Chapter 3: What kind of person is the new teacher?!
Vol.1 Chapter 1: Entrance Ceremony! Hyakki Academy!
Vol.1 Chapter 3: What kind of person is the new teacher?!
The side-story of "Youkai Gakkou no Sensei Hajimemashita", set 1 year before the events of the main story, following Maizuka Mamekichi's first year at Hyakki Academy.Serialized on Pixiv Comic.