I've been looking for this novel but don't remembered the title.. This story about FL transmigrate(to novel world) as a maid who friend with a princess..If not mistaken both of them have been caught and serve as maid at enemies area/country.. The ML(princess brother) is a reborn person and save their sister and the maid early..The original maid died when protecting the ML.. ML want to revenge to his brother and his brother transmigrate girlfriend (original).. That what I remembered in the beginning...Try to look for this novel but didn't find it .