Aion

Aion (アイオン) is the heroine in the epilogue story only. She is a cyborg created by Sorata Suzuhara who goes under the name 'The World' and her original name was Aine (愛音). Aion has an angelic appearance with a fair complexion and long grayish blue hair that is ombre white at the ends. She has two accessories connecting both of her head and white blue dress transparent at the ends. Her feet were blue and so is her hands