The Kingdom of Etariol, blessed with rich nature and a mild climate. Aristia Mark, the daughter of a Marquis, lived a peaceful life surrounded by those who loved her. However, in the spring of her 15th year, her life begins to change drastically after testing the magical attributes dwelling within her. The four main elements that only she possesses. The Japanese books that only she can read. And, the Kingdom Knight who helps only her!?