Kurrumi is moving into Clarines because she has to get away from her annoying older brother Prince Raj so when she goes to Prince Zen to become the office body guard of Shirayuki a young girl that has beautiful rare red hair she meets a young herbalist named Riyuu that seems very very interesting. Although she knows that Red Hair is not rare whatsoever because she has studied about genetics she doesn't really mind it. She's known as Kurrumi the Killer because she's a trained assassin so when she meets Obi it wasn't a surprise that they got along very well. But when an unexpected visitor comes along will Obi fall for this visitor??