Mayumi Tsuwabuki

Lady Mayumi is the chosen one to be sacrificed, however her father did not have the heart to kill her and instead cloned her to spare her life. Her sister who is being somewhat manipulated by the beast that they are trying to seal purposely puts Mayumi's life at risk against their father wishes after turning him to earth and ultimately killing him. Mayumi is seen as heartless and cruel to her clone, yet in a flashback on her childhood (when she is told she will be sacrificed) she kisses Yugi and has him pledge his allegiance to her until she dies. She is kind and innocent as well as selfless at this time, telling him no matter what even if she runs to always bring her back and make her fulfill her duties. She apologises to her clone, Ayumi, before she dies from helping Rin kill the beast their family has been sacrificing people to seal for centuries.