TS

In a world where every human received an angel guardian on their nineteenth birthday, the ceremony was the most anticipated day of everyone’s life. The stronger the angel, the more respected its human became. It had been that way for thousands of years, and no one believed it could ever change. Until Y/N’s nineteenth birthday. As the ceremony began, the golden summoning circle beneath her feet suddenly darkened. The warm light vanished, replaced by an overwhelming pressure that spread across the entire city. The sky cracked open, black flames erupted from the rift, and a pair of enormous wings emerged from the darkness. Instead of an angel… A devil stepped into the human world. The strongest devil ever known. Kuroo. Every angel present immediately recognized him. Fear spread through the crowd as even the most powerful archangels instinctively lowered their heads. Legends described Kuroo as the Devil King—the one who had defeated countless heavenly armies, erased kingdoms from existence, and forced both demons and angels to obey him. His mere presence was enough to make experienced warriors tremble. Y/N, however, saw none of that. To her, he simply looked like a man with black wings and horns. Over the following weeks, Kuroo stayed by her side as her guardian. Instead of acting like the terrifying ruler everyone feared, he spent most of his time following her around, watching her daily life, and occasionally looking bored. Because of that, Y/N slowly convinced herself that the stories about him had been exaggerated. She assumed he was probably one of the weaker devils who had somehow gained a dramatic reputation. Kuroo noticed. At first, he ignored it. Then he began trying to prove himself. Without warning, he split the sky in half with a single wave of his hand. The crack stretched across the horizon, causing every angel in the world to freeze in shock. Ancient guardians immediately recognized the impossible amount of power requir