Honestly this novel has a lot of potential, it could be up there in the future with author's pov, But as of now it could get a lot better. Author you should put more weight into your story, for example we never knew how many students are actually attending the academy or how many teachers are teaching what subjects and how the educational system actually works, and for being called the 'best' academy it's a little bit weird how a mere C-rank could become a teacher, considering that they are teaching nobility, you know like... Noble households that are probably filled with S or SS rank members. You could also expand the main cast, I think 3-5 characters is a little bit on the small side but it wouldn't an issue if they get enough character development