The Guy I Kinda Like is a Sergeant

The Guy I Kinda Like Is A Sergeant (気になるあいつは軍曹, Ki ni Naru Aitsu wa Gunsō) is the first episode of the anime series, Full Metal Panic!

Summary
Three members of Mithril's Special Response Team (Sousuke Sagara, Kurz Weber, and Melissa Mao) are assigned to protect Kaname Chidori from terrorist organizations. Because of Sousuke's age and Japanese heritage, he enrolls at Kaname's school, Jindai High, as an undercover student. However, because of his speech and actions, he comes across as "weird" to Chidori, though she admits he is "interesting" in a phone call.