The Empress I Killed N Times Wants Me to Redeem Myself with My Body

Mo Yun is an assassin. Legend has it that no matter how difficult the target, once he sets his sights on them, they'll lose their head. This assassin, who has never failed, is tasked with killing an empress who is immortal. He kidnaps her and tries countless times, but he can't kill her. Yet after hundreds of cycles of killing and being killed, he wins the empress's love...