The popular and pretty Kaname Chidori is back, and just trying to be an ordinary high school student. But Sosuke Sagara, that hard-bodied special agent of Mithril, has gone undercover, posing as Kaname's classmate to protect her from the forces of evil. While being an ordinary student is fun for Kaname, so far it's been sheer torture for the commando-trained, gun-toting and all around butt-kicking Sosuke. But wait - is there romance in the air?! Is it finally dawning on Kaname that she's attracted to Sosuke? The moment of romantic truth for these two arrives when Tessa, a beautiful and sexy foreign exchange student from America, comes to their school and flashes her winning smile at Sosuke! Now we'll really see Kaname's true feelings for Sosuke!