Big Brother Knows Best (Frieda x OC)

A boy joins the Cadets in 839, intent on joining the Scouts. He becomes blunt and sarcastic after his first year there, but he meets a girl while in Trost. She is the key to everything, maybe not his heart, but once she finds out he isn't a sinner, she cant help but feel attracted to him. Major Spoilers for Anime only...