Full Metal Panic: Second Raid Collection

It's tough to keep your grades up and save the world. But for Sousuke Sagara, an undercover high school student and member of the mercenary group Mithril, it's all in a day's work. A new threat to Tokyo has arisen: Amalgam. This mysterious organization has been running things from behind the scenes. Sousuke must face his own internal struggle while being spread thin between schoolwork and war.