Youkai Gakkou no Seito Hajimemashita!

Vol.1 Chapter 9: Delinquent VS Honor Student (Part 2)
Vol.1 Chapter 8: Delinquent VS Honor Student (Part 1)
Vol.1 Chapter 10: Even Idiots Catch Colds!
Vol.1 Chapter 8: Delinquent VS Honor Student (Part 1)
Vol.1 Chapter 10: Even Idiots Catch Colds!
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.