[In those few words the meaning he trying to convey is that he cannot comprehend how this had come to be. He had seen Tanjiro not to long ago. He had spoken with him. He had shared some story of his own interaction with the wind pillar and he had gotten some odd ideas into his own head about his future interactions with that man in an attempt to befriend him.
But Tanjiro had been in good health then. He had even come to train with him. However Giyu does not press him for an explanation. That could come another time. First they had to address the matter of their current whereabouts.]
make it dance
[In those few words the meaning he trying to convey is that he cannot comprehend how this had come to be. He had seen Tanjiro not to long ago. He had spoken with him. He had shared some story of his own interaction with the wind pillar and he had gotten some odd ideas into his own head about his future interactions with that man in an attempt to befriend him.
But Tanjiro had been in good health then. He had even come to train with him. However Giyu does not press him for an explanation. That could come another time. First they had to address the matter of their current whereabouts.]
Tanjiro, do you recall how you arrived here?