Paramour's forbidden oath

Irma Tiars has always done her job right as a succubus, bringing lust and desire to any men she was summoned by. Being around for a hundred years, she thought she would never fall under the love spell, immune to the silly feeling ...unfortunately fate seemed to have other plans for her after encountering one specific dreamer that has piqued the interest of the demoness. Celestine Valade was living a normal life as a black girl, with good friends, a loving family, and her artistic and strange interests, she thought her life was just going to be normal...that is until she met a high demoness within her dreams. Upon meeting, the two find out that they are soulmates and slowly began to fall in love with one another, though the two know there are going to be many obstacles, mainly with the succubi's broken oath of not falling in love, and how these two will going be together. "A story of two different creatures and how they form an enduring and undying love despite life's difficulties."