My Sister is the Valkyrie Queen — Episode 17

Carissa and Gita, two orphaned sisters, fought through hardships to build a better life. At Gita's engagement party, Carissa is looked down upon for wearing a janitor's uniform, having rushed there straight from a secret mission. But when Gita is betrayed and humiliated by her fiancé, Carissa reveals her true identity as the legendary Valkyrie Queen, teaching a harsh lesson to everyone who dared to trample on them.