Xiao Yu's CP text is written by the original author and takes over the timeline of Diluc's return to Mondstadt.
"I want to go to Arcadia."
"Where is that?"
It is the land of miracles, the promised land, the ideal land where all happiness is realized.
The young brother looked at him, the lamp casting a gentle and soft light on his side face.
"Does Kaia have a wish that must come true?"
Yes.
I hope I won't be stuck on a rainy night.
The rainy night when his father left him behind, the rainy night when his brother never looked back, the rainy night when he had never seen a clear sky in his life.
Four years after the rainstorm, he has forgotten the childish wishes he made in his childhood.
It wasn't until happiness came to his hand that he realized he was in Arcadia.
Intention: brotherly harmony.