nearly dropped it after slow confusing episode 1 but after that it became EXTREMELY good mystery plot around the pressurised exam system but looked at very much from the teacher's viewpoint and examining their interactions, characters and motivations as well as how the students handle it 〜good example of Japanese drama taking an overused trope and seeing it from a new angle it has the best qualities of a mystery story in making you want to know what comes next and how the characters develop so I finished it very quickly〜you need to like following plot details and reading character, there is not so much action, but if you like a drama of this type the effort is worthwhile〜 ?