Irina Shidou

Rank: Angel (Former Human)
Weapon: Excalibur Mimic

She is Xenovia's partner and Issei's childhood friend. After finding out that the God in the Bible is dead, she still follows the teaching and is under the direct command of Michael. She also has a crush on Issei and was shocked to find out he turned into a devil. They are still friends despite that flaw.