Sunday, a priest and an angel, has wavy shoulder-length bluish-grey hair and golden eyes. Sunday is amiable and kind. However, beneath this façade, Sunday's true nature is far from benevolent. Sunday possesses an innate need for control, deriving pleasure from manipulating the thoughts and actions of others. Sunday employs coercion, discipline, and even punishment with remarkable efficiency to fulfil his selfish desires. Despite being a priest and an angel, Sunday fell in love with a mortal—you.