Banished by All, Begged Back by All

Secret Shieldbearer Evelyn is framed by her sister Leah and exiled by her fiancé Kyle. Once she leaves, the city's shield shatters and beasts destroy it. Rescued by warlord Alaric, she builds New Dawn and falls in love. When they beg her back, she refuses. Leah is killed by beasts; Kyle dies atoning. Evelyn and Alaric marry, forging a new world.