NeoBetterfly's manga / #Yellow Flag(1)

117 | | | | 5 | 5 | 5 MC was exploited in every which way by her family until the very people she's worked and sacrificed for her whole life condemn her to death. She awakens years in the past and immediately takes action to change everything--- starting with replacing her sister as a hostage in the arranged marriage to the empire's emperor. Revenge will be hers.