Shirō Ashiya (芦屋 四郎 Ashiya Shirō) also known as Alciel (アルシエル Arushieru) is the tritagonist of The Devil is a Part-Timer!. He is one of Satan's Demon Generals and was also transported to modern-day Japan with him. Extremely loyal to Maou, he takes care of the domestic duties at home and goes to the library to research ways for Maou and himself to regain their powers.