[Keeping into consideration that the one actually creating the cards is Sakura herself, helping her out in any way would be nice; it didn't matter if it even related to the cards or not.

Anything that he could possibly do for her is something that she would simply delight her. Nothing else mattered. Besides, she always had her invincible spell if things didn't go her way-- "everything will surely be alright". It was something that she believes in, through and through, even now.

But then he says he wants to greet her family properly and, well...]

Dad might not be home since I think he's going to another archaeology dig, so the only one who might be around is my big brother.

[And we all know how Syaoran and Touya are.]