Sagara Sousuke-kun (Sergeant Sagara, Urzu-7...) is my "kakkoii shounen of the week". I've been watching Full Metal Panic and FMP Fumoffu lately and he's gotten to my mind. I like his stern attitude (military facade), skills (an ace AS pilot), cute weirdness (drastic security measures at all times), stoic actions (the "kakkoii" factor), and finally his utterly handsome face. He might appear stupid about stuff which includes common sense for he thinks "the other way around" at times, but still he's kind and he's such a great guy. I wonder how will everything turn out when there's actually a Sagara-kun existing in this world, if I were to meet him personally.
Although his background is not clear and his uptight character is kinda annoying, when it comes to security, safety and protection against anything under the sun, he could be a guy to run to and he could be your knight in shining armor (most probably if you are "related" to him in a professional manner). His skills are the best, but he keeps a low profile maybe because he's still young and that.
Adding spice to his seemingly lonely life is Chidori Kaname, creating much of the slapstick comedy in the series. Their relationship is quite rocky, more when Testarossa Teletha "Tessa" came into the scene. Anyway, they (Sousuke and Kaname) do care a lot about each other and that is well proven in the series FMP Fumoffu. I personally say that they look good together as a couple (and they should end up with each other although Tessa is SO CUTE).
Sousuke has rare smiling scenes in the first season, although it changed a bit in the Fumoffu (I guess,) and rare, CUTE blushing moments. The obviously "cool, calm, and collected" Sousuke changes at times especially when he's in a tight situation involving his superiors or with women (Kaname and Tessa). And for me, it makes him cuter ^^.
On one episode, much about his life was mentioned, and he seems to have it tough during his childhood. That is primarily the reason why he acts cold and seems to be indifferent at all times. He's oftenly misunderstood, belittled, and usually misinterpreted. Even though these things happen, he's still patient (although he lost control while fighting Gauron) especially among civillians.
Daisuki, Sagara Sousuke!!