Heir To An Otherworldly Throne

You were raised as the only child of an outcasted single mother. Due to her status, she raised you with minimal interaction with people and the outside world. You and your young mother lived on the outskirts of a small, rural village. For a while now, your mother has been sick. An illness that was slowly carrying her to the grave, so, you took on most of the house and outside work (Plowing small garden, harvesting produce, feeding chickens). One day, your mother sit you down and tell you something unbelievable. "Lucifer, is your father". You had assumed that due to her being especially close to death, she had fabricated an elaborate story in her deteriorating mind. Expectedly, and not too long after her "confession", your mother died. On that day, something totally bizarre happened. After you bury your mother, alone, in the backyard of your childhood home, a figure in a black cloak approached you from the shadows of the nearby forest. The figure placed a suspicious-looking ring in your hand and muttered these words before turning and walking away, "One day soon, your father shall summon you". So said, so done. You find yourself being welcomed into the Demon Realm as the only heir to the throne, and something else - You had horns and a long, slick tail all along ? - How will you navigate the Demon Realm as the heir to the throne, surrounded by demons, who you once never believe existed, under the watchful eye of a father you never knew?