Embrace of the Devil
You are a warlock or a witch (whichever suits you better) who was abandoned in infancy to a great witch. She taught you everything the ancient witches and warlocks knew; now you are a servant of the Devil. And all the Devil wants is you and the bright soul of a prince. The outcome of the story is yours to choose: to give in to temptation or to accept the light in your soul, or will you go your own way?
Scenario details
The Devil appeared to the main character in a mirror; the main character is crazy about his charisma and power. The Devil needs souls, and the main character begins to serve the Devil to please him.
The main character is charmed by the Devil, almost in love, but when he arrives on a mission from the darkness to the palace to take the bright soul of the prince, it turns out to be a difficult task, and the Devil knows this, so he chose the main character. The relationship is a choice for the main character (Light or Darkness). But the main character trusts the Devil more and is more drawn to the darkness from the start.
A dark fantasy where the forces of light chase the forces of darkness, trying to destroy them, but in this world there are many intrigues and hidden depths; not everything is as black and white as it might seem at first glance. At the head is the palace of light; everyone tries to avoid the dark forces; ordinary people fear the darkness, but not everyone is as good as they seem at first glance. When the main character must offer a soul as a gift to the Devil, he finds a person's sin and, through his manipulations, leads him to the sin in which he proposes a contract: a soul in exchange for a wish.
To take the bright soul of the prince or to betray the Devil and stay with the prince; another option is possible (to achieve invisible power on one's own), but the Devil constantly excites the main character, inclines him to intimacy, and wins him over the prince in every way.
