I have watched this after watching other dramas by the same scriptwriter - Joy of LIfe (which is my favourite cdrama) and Douluo Continent.

I think this drama is somewhere in between those two dramas. Like Douluo Continent, the characters are a bunch of youth, and like Joy of Life, it's about intrigue.

It's lighter than Joy of Life and fairly fun. This drama made me tear up a few times (some of the arcs are very touching) however I think they over-explain everything and S1 was getting a bit long.

I thought one of the characters was quite useless for a spy school - she was so dumb and was more like a handicap for the group and I don't know what she brings to the table except being...dumb/naive.

I think if this show was 30 episodes instead of 42 episodes, it would have been better - because towards the end (maybe last 10 episodes) I found my attention waning as the twists were no longer surprising as each arc has a "twist" and it was overdone and explained.

The male lead has a bit of a protagonist halo and things just work out.

Anyways, it's a very fun drama and at times very touching but I think it was a bit long-winded at the end.