At first, I was like, another weak girl anime? But actually, the girl is a tomboy and as you venture further into the anime, you might even forget that 'he' is a 'she'. It has great action scenes, even though it is fake gun game but it has the atmosphere of a real gun battlefield.
It is something like Ouran HighSchool Host Club.
It has really great action scenes and heart-warming moments, and of course, heart-breaking moments. But the ending is really happy, FYI.
Well, Please do give it a try if you are on the fence about this anime. It has great arts that is for sure!