User blog comment:IamJakuhoRaikoben/Chapter 422: Orochi's Fin, Review./@comment-24744891-20150302140037/@comment-24744891-20150302151649

Yeah I also noticed and realized the sensei part. If I could remember, I think they called Guild Masters as "Masuta" instead of "Sensei" in the anime. Guess we'll just have to wait and see in the next chapter to confirm this.