Full Metal Panic! S03 E09 Her Problem

Kaname confronts Agent Wraith about Sousuke's departure, but as she is about to get answers, Xia Yu Lan ambushes the two. Kaname outwits her pursuer until Leonard Testarossa, another Amalgam agent who is also Tessa's brother, shows up and kills Xia Yu Lan. He reveals that the assassin was a rogue agent acting outside of Amalgam's interests.