With the two keys safely in his pocket, Kaito made his way back to the parlor where he had first encountered the girl in the white kimono. The mansion seemed to have grown even more restless since he had retrieved the second key, as if the remaining spirits were aware of his progress and were becoming increasingly desperate to stop him.
As he entered the parlor, the air was thick with a sense of foreboding. The portrait of the sad - eyed woman on the wall seemed to glare at him, and the white - sheeted furniture appeared to huddle together, as if in fear. Kaito took a deep breath and called out, "I know you're here. I need to talk to you."
For a moment, there was no response. Then, a soft sobbing sound came from the corner of the room. The girl in the white kimono materialized, her form more translucent than before. Her long hair still hid her face, and she continued to tremble as if in the throes of great pain.
Kaito approached her slowly, his hands outstretched in a gesture of peace. "I'm not here to harm you," he said gently. "I want to help you. I've found two of the keys, and I know the third one is with you. Please, give it to me so that I can break the curse and free all of you."
The girl let out a wail. "You don't understand," she cried. "The key is a part of my pain. If I give it to you, I'll have nothing left."
Kaito was taken aback. "What do you mean? The curse is what's causing your pain. Once it's broken, you'll be free from this suffering."
The girl shook her head. "No, you don't understand. The key is tied to my memories, to the reason I'm still here. If I let go of it, I'll lose myself."
Kaito thought for a moment. "Tell me your story," he said. "Maybe I can help you in a different way."
The girl was silent for a long time. Then, slowly, she began to speak. "I was the youngest daughter of the Fujiwara family. My father was a powerful man, but he was also greedy. He made a deal with a dark sorcerer, sacrificing me and my siblings to gain more power. I was the last to die, and my pain and anger were so great that they bound me to this place. The key was created from my very essence, and it holds my memories and my pain."
Kaito listened intently, his heart filled with compassion. "But you don't have to be bound by this pain," he said. "Once the curse is broken, you can move on. You can find peace."
The girl looked up at him, her face finally revealed. Her eyes were red - rimmed from crying, and her features were delicate but twisted with sorrow. "Do you really think so?" she asked.
Kaito nodded. "I do. Let me break the curse. I promise you, you'll find peace."
The girl hesitated for a moment. Then, with a sigh sigh, she reached into the folds of her kimono and pulled out the third key. It was a small, golden key, glowing faintly with a soft light. Kaito took the key from her, his hands trembling slightly.
"Thank you," he said. "You've made the right choice."
But as soon as Kaito took the key, a powerful force seemed to shake the mansion. The spirits of the other Fujiwara family members who were opposed to breaking the curse began to materialize. They surrounded Kaito and the girl, their faces twisted with anger.
"You've betrayed us," one of the spirits hissed at the girl. "Now, you'll all pay."
Kaito knew that he had to act quickly. He held the three keys in his hand and began to recite the incantations that he had learned from the ancient book. The keys began to glow brightly, and a powerful energy filled the room.
The angry spirits lunged at him, but the light from the keys pushed them back. Kaito continued to recite the incantations, his voice growing louder and more confident. The girl joined him, her voice soft but determined. Together, they fought against the spirits, hoping to break the curse once and for all.