I don't know who writes this synopsis but it stinking lie. 39 chapter in and all we have is jerkass teacher who only follow rules what written in the book and don't gives a toss about emotional well being of his students. Did you ever read Great Teacher Onizuka about adult delinquent who become teacher and helped his students ,who lost faith in teachers and school, by don't caring about rules and being generally crazy in his teaching? That manga was about how you don't need to have respectable education and follow rules (and have broom up you ass) to connect with your students. Here we have an inversion of this. Jimi Tarou don't care what his students think, as soon as working hours ends he don't care about anything since "my teacher job is ended today", if there is problem he resolve it by following "proper rules". Manga tried excuse him with having "dark and troublesome" past there he made "grave mistake" but it fall flat next time he tell "i don't care what you think" and act like his students are machines and not human being. Maybe it value dissonance but the only message what i can read from this work is: "As long as you follow rules and comfort to society you'll be okay and if someone have problems, emotional or otherwise that's they fault".
