Gung-ho aggressor Sosuke and his now lovesick charge, Kaname, are back and this Sosuke must do more than protect her from terrorists!A new love interest for Kaname sparks jealousy (disguised as skepticism) in Sosuke, but little does Sosuke know, Kaname’s enduring feelings for him are growing and becoming harder to ignore. When she’s finally ready to face Sosuke and fess up, she receives quite a shock. Sosuke’s apartment suddenly becomes a battleground, and it’s up to this war-crazed Mithril agent to protect Kaname from the knife-wielding terrorists who wish to kidnap her!Will Sosuke be the hero once again? The guns are raised and confessions are put on hold in the thrilling fourth installment of Full Metal Panic!