Ellen Poe

Ellen Poe (エレンポー, Eren Pō) is an ordinary Human girl, who was wounded in her heart, but was saved by a Demon named Styx, who uses her body to travel during the day, due to his weakness to light, in exchange mimicking her wounded heart perfectly and allowing her to live.

Trivia

 * Ellen's appearance is based off of Nene Amano from Digimon Fusion.
 * Ellen's name, along with her nickname to Styx, Edgar, is a reference to Edgar Allen Poe, a famous American author, who is famous for his gothic horror.