Maou Sounanchu!!! Manhua

Title: "Demon's Island" Lost and stranded on the mysterious Demon's Island, Azazel, the once fearsome demon king, grappled with a reality he never anticipated - his magic, the source of his dominance, was null and void here. With his four loyal heavenly kings by his side, Azazel felt the weight of his powerlessness pressing down on him. In a desperate bid to regain his magical prowess, Azazel concocted a plan to harvest the souls of the island's human inhabitants. Yet, as he delved into this dark scheme, he unearthed a revelation that shook him to the core. The human souls weren't mere vessels of power; they pulsated with emotions, memories, and intricacies that both fascinated and confounded the demon king. Amidst the struggle for survival in the harsh island environment, Azazel and his companions stumbled upon a group of humans whose tenacity and spirit defied all expectations. Among them stood Rei, a young woman whose courage and kindness pierced through Azazel's stoic exterior, stirring something long dormant in his heart. As bonds formed and tensions escalated on the island, Azazel found himself at a crossroads, torn between his insatiable thirst for power and the stirrings of empathy and compassion within him. The lines between friend and foe blurred as Azazel grappled with his inner turmoil, facing the harsh truths of his past and the uncertain path ahead. In a gripping narrative of redemption and self-discovery, "Demon's Island" promises a tale of unlikely alliances, moral dilemmas, and the transformative power of choice. Will Azazel succumb to his dark desires, or will he rise above his demons and forge a new destiny for himself and those around him?