Yeah... [Touya looks distressed. How could Yue have forgotten? Had this place done something to him to make him forget? Or was this part of that 'some people don't remember things that happened to you' thing?]

I was dying. From... some disease, I can't remember what it was but. You gave me my power back and turned me into a guardian to save my life.

[The whole experience was intense, to put it lightly. There was no way Yue could have forgotten, maybe it just hadn't happened to him yet.]