^^I always think back to that story when I see Yuuka and Meiling together, though Sakuya in the background really ties it together. I wish Keymaster made a few more stories after "Tengu of (Mis)Fortune".
I hope we get to see them again soon. They never did acknowledge that little note from Ch. 185, though rereading it now I suppose it could be seen as just another cute flirty moment.