I love this kdrama so much <3 this is in my top fav kdrama in my list its so cool and such a beautiful kdrama i've ever watch. School 2015 and 2017 is both cool and amazing! i thought this kdrama is not exciting if you not watch all of the episodes but i watch it until i reach the last episode.
If your not already watch this kdrama watch it now! you will gonna love it :) <3