Eirika

Eirika a protagonist in Fire Emblem: The Sacred Stones and a DLC character in Fire Emblem Awakening. She is the only daughter of King Fado of Renais, and the younger twin sister of Prince Ephraim. She is the princess of Renais and a very kindhearted, forgiving, gentle, and careful person. Eirika is shown to care for others, especially the ones precious to her. She detests violence, saying that she wishes there was a way to solve their issues without violence, but accepts that in the times of the game it is a necessity for stopping war and bringing peace. This contrasts with her brother, Ephraim, as he is impulsive and likes fighting, and is revealed in his nostalgia in Serafew that he wants to become a mercenary.

(Source: Fire Emblem Wiki)