Okazari no Kouhi? Nani Sore Tenshoku desu!

Shannon, a girl who has been raised in secret in a villa, is to marry into the Altimia Empire as a symbol of peace after the end of the Cold War. Not knowing the face or name of her fiancé, she is anxiously heading to the other country when Shannon and her companions are attacked by a powerful magical beast. She prepares herself for death, but when she wakes up, she finds herself being protected by the now extinct divine beast, Lycaon... After nearly dying once, Shannon decides to live positively.

(Source: Natalie, translated)