Messiah (2011)

A live action adaptation of En Takadono's Messiah novel. Eiri Kaito, a "Sakura" agent, infiltrates the prestigious Seinei Academy. His mission is to get closer to Fumikazu, an ordinary schoolboy whose brother is the leading suspect in a terrorist incident. As the plot progresses, which will Eiri choose? His new "friend"? Or his "mission"?