Eris is a gentle and kind goddess of fortune whose duty is to oversee the souls of the deceased in the fantasy world. She is Aqua's junior in the heavenly realm and serves as the spiritual pillar for the people of the Eris Cult, who hold her in high reverence. Due to her high sense of responsibility, politeness, and flawless execution of her duties, she is frequently contrasted with Aqua's uselessness. In addition, she harbors a secret identity, descending to the mortal world in an avatar named "Chris," who is a cheerful female thief, Darkness's close friend, and the person who taught Kazuma the Steal skill. Although Eris appears flawless in the eyes of her devotees, she holds a secret that causes her deep embarrassment and shyness whenever it is brought up: the fact that she has to use breast pads to enhance her physique, a secret that Aqua constantly uses to tease and bully her.