AI Image: In a dark city where demons hide among humans, a quiet boy named Kai lives alone. Kai looks normal…

Prompt

In a dark city where demons hide among humans, a quiet boy named Kai lives alone. Kai looks normal… but he carries a cursed sword glowing blue. The sword was left by his father — a legendary samurai who disappeared years ago. One night, while walking home under the rain, the street lights suddenly go out. A shadow moves. A demon with burning red eyes appears from the darkness. People run. Cars crash. The city falls into chaos. Kai slowly closes his eyes. Then he whispers: "I didn’t want to use this power again…" The blue sword appears in his hand, glowing brighter and brighter. The demon laughs. But in one second — Kai disappears. A flash of blue light cuts through the night. Silence. The demon’s body splits in half. Kai stands there, breathing slowly… the sword fading away. From the rooftop above, a mysterious girl watches him. She smiles and says quietly: "So the Blue Samurai… has finally awakened."