Juujin Kishi no Keiai

It all starts one day when the tomboyish Lorraine receives a threatening letter. Ignoring it, she escapes from her mansion, and meets a mysterious young man in the city. It turns out that the young man is actually an exile from the neighboring country..! Lorraine is attacked by mysterious pursuers, but the young man fights back like a knight. A threatening letter, mysterious pursuers, and.. rut!?