Caius was dying. He was sure of it. A smile came to his face as he thought back on the years of protecting Yeul. The girl who would never live to be 18. Each one was different. The first had been only ten when she had died sealing a monster in Paddra. She had died in his arms saying that she would see him again in the future, she just knew it. That was when he gained the heart of chaos and his immortality. He swore then to always protect her. Each time she was reincarnated he would be there to watch over her and protect her until her visions killed her.
Then he thought back to what Noel had said. 'She was smiling'. She had always smiled. Whenever she died in his arms she had a smile on her face. Only the first one hadn't. She had a scared expression due to what she had just done.
He thought to each individual Yeul. The flower collector who he had taken all over the planet to help her find flowers, the one who loved to bake who he would force him (not really needed) to try the things she made, the singer who would always cheer everyone up. Every one was different, They were all unique but they were all Yeul, the same girl who caused her own death to save her home.
Opening his eyes he whispered into the emptiness of Valhalla
"I'm sorry Yeul"