Hongou Kazuto

Kazuto is a modern day Japanese student who was trained in kendo, military strategies and has pretty good knowledge about Asian History in general. He was sent back in time to ancient China when he attempted to stop a mysterious student from stealing an ancient Chinese mirror within the school's collection and ended up breaking the mirror in the process. He is saved by Kan'u and is mistaken to be the "Messenger from Heaven" who is said to be able to bring peace to China. (The story changes a little in Otome Ryoran.)