Rina is the demon of Gluttony, the second of the Seven Deadly Sins. Unlike the other demons, Rina is quite insecure, partially due to her eating unusual eating habits. As the embodiment of the sin of gluttony, Rina's power comes from the consumption of food in large quantities, and if she were to stop eating, her powers will backfire, causing immense pain. In the past, she was ridiculed by people many time for her unusual behavior, something she cannot change.