Onna Kishi no Konkatsu Monogatari

Due to her tall stature and red hair, Layla Shormet has been called "Candle Girl" ever since she can remember. It's no wonder she's insecure about her looks. After finding her fiancé being intimate with another woman at a party and then being ridiculed by him in front of everybody there, she calls their engagement off. In fact, she decides she's done with marriage once and for all and that she'll just be a knight for the rest of her life! So, when she hears about an assignment where she must accompany the princess to another country where the king is looking for his queen, she accepts it. But, little does she know what's in store for her there...! (Source: Renta!)