Excalibur was not sure if this was a dream or if her longing caused her to see these things while sleeping.
In the king's magnificent hall, when she was only a holy sword there to protect him, when she was just a queen who had been his friend.
“Arthur, do you have any siblings?”
“Mmh?” He responded with a slightly dazed look at the time. “...Probably...have? It could be…um, sister?… Morgan Le Fay.”
His voice sounded unsure, and he wasn't the one who was perplexed. His eyes narrowed as if he was processing something in his mind; this was typical of her master; he was always like this, and Excalibur was used to it. He could handle things well, but when it came to general matters or the specifics of his life, he did not seem to care and even let it pass him by...
'Because it does not matter.'
He always said this when she asked.