Full Metal Panic? Fumoffu contains episodes 1-12 of the anime directed by Yasuhiro Takemoto.

Sousuke’s going to high school, and all the qualities that make him a good soldier also make him an amazingly awkward classmate. Poor Kaname knows that better than anyone, since Sousuke’s her undercover bodyguard. But how “top secret” can he really be when he’s sneaking around in a teddy bear suit, blowing up lockers, striking out with every girl in sight, and taking a mech to the hot springs?