This series is the live-action adaptation from “Messiah ~Special Public Security Bureau Section Five~” written by Madoka Takadono.

As a prequel which should have explains the background of this movie series, it doesn't show much about our Secret Service. I don't even think that this movie is about Sakura anymore, but just a bunch of trainees on their first mission. They lacked subtlety, they stuck out like a sore thumb and the fight is just mediocre. The acting is a solid 6 of 10 but you'll see that they improved on the sequel.

Or I guess that's why this is a prequel.