The Incubus system to conquer the world!

Introducing Xolvion, the youngest son of the mighty demon lord. As his father's favorite heir, he holds the potential to inherit the throne. However, there's a dark secret - he's also the offspring of a humble succubus, making him a half-breed compared to his full-blooded siblings. Unlike them, Xolvion lacks the innate magical prowess they possess. Despite his perceived worthlessness, he stands out due to his ability to charm the opposite sex. Unfortunately, this allure becomes a curse when, on the eve of his 221st birthday, his siblings plot to eliminate him. Narrowly escaping with his life, Xolvion chooses to flee to the human realm, fearing for his safety amidst the looming danger. With a burning desire for vengeance, Xolvion vows to reclaim his birthright. In his new surroundings, he discovers hidden powers within himself. He learns that by absorbing the essence of others through intimate encounters, he can acquire their abilities and grow stronger. Thus begins Xolvion's journey in the human kingdom, using his seductive nature to navigate the world of humans. His path takes him to meet powerful female heroes, known as the holy saints, where he strategically seduces them to gain their extraordinary skills. Each conquest brings him closer to his ultimate goal: to become the next demon lord and exact his revenge on those who wronged him.