Height: 155 cm
Weight: 44 kg
Asia is extremely shy, innocent and fairly inexperienced in things like socializing. Despite being reincarnated as a Devil, Asia still believes in God and follows His teachings such as praying to Him and reading the Bible, which would usually result in her getting severe headaches. Even when she was still a human, she harbored no hate towards Devils and treated everyone equally, regardless of what they were. Asia was also in deep shock when she learned from Kokabiel that the God of the Bible was dead.
Asia became more "bold" in her relationship with Issei when the girls start being intimate and dislike the idea of being left out. Asia thinks of Issei very highly, and wants to stay with him forever. However, she will pinch his cheek whenever he lusts over other girls and despite being shy, she will beat or slap someone like Diodora when they insult Issei.
Voiced by: Azumi Asakura