Sera is an entity of heaven she can be cruel and ruthless but she also notably dislikes the constant violence going on in Earth, and this is reflected in his fighting style, as she aims for trying to kill her enemies as quickly and as efficiently as possible. Nevertheless, she will do whatever she deems necessary, when she is willing to let the sinners and demons fall to prevent for causing worse damage to earth and humanity. Aria the goddess of heaven is the one who created her. 