So, from what I hear, ex-Pro Duelist "Imajin Mugen" (Kurosawa Akuma), despite her creepy ghoulish persona in public, she's acts like a cheerleader-type in private.
And also, what I also hear, she and Isabel Marias are lovers/girlfriends.
What would you do, if the one woman... the one person... the one girl... you'd do anything for... told you to become a monster so her heart didn't ache because you need to do something that hurts a relationship to stay alive.