Full Metal Panic!
フルメタル·パニック! (original)
Sousuke’s a great soldier, but he’s an awkward classmate and Kaname knows that better than anyone, since he is undercover as her bodyguard at school.
Starring
Watch "Full Metal Panic!" from streaming services Hulu Plus, Amazon released in 2002. It's a animation and sci-fi & fantasy show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.