Irina Shidou is the childhood friend of Issei Hyoudou. She is a devout Christian who, even after learning of God's death, still follows His teachings. She later gets reincarnated as an Angel by the Archangel Michael through one of the Brave Saints, her ranking among his peerage being "Ace". She has fell in love with Riku She is sister of Cheria the Summoner,Zuko,Jeffery,