Voiced by: Yukari Tamura (drama CD), Midori Tsukimiya (anime) (Japanese); Cherami Leigh (English)
Eucliwood, called Eu (??, Y?) for short, is a silver-haired necromancer who brought Ayumu back to life to be her guard, and has been living with him ever since. Her magic is so powerful that she has to wear heavy armor and suppress her emotions in order to control it. Her words also carry strong magic, and she is able to kill someone just by saying the word "Die." Because of this, she avoids talking and instead communicates through written notes, mostly pertaining to her appetite. She experiences severe pain whenever her magic is activated, and she claims that even if she were to die, her magic would continue uncontrolled. She does not like people talking about death or telling someone to go die, since (as she takes on the pain of anyone she heals, revives or kills) she understands the pain of dying, despite being immortal herself. Even though she considers Ayumu to be her servant, she's shown to care about him and has admitted that she's in love with him, but can't express her feelings. Ayumu comforts her whenever she thinks about her much insecurity, and she is shown to take these feelings between them to heart. Ayumu often daydreams about her behaving like a visual novel character and speaking in a cutesy manner (voiced by a different voice actress in each episode of the anime). She is also capable of becoming a Mas?-Sh?jo, and it is implied that she interned at Matellis, under Ariel. In Episode 11, she spoke to Ayumu for the first time, indicating that she has gained some control over her magic. How or what she did to control it is a mystery; however, she sometimes forgets she can control it.