I liked it! Darker than Black is one of my favorite animes. I love this pairing especially as well. :) Though I'm trying to figure out...are you telling the story from Hei's point of view or narrative?

best pairing ever

*sigh* That was beautiful. Such a lovely atmosphere; the picture it painted had a perfect black-blue/silver pallet. And the mere notion of falling stars has a delicious bittersweet taste, in this context.

I liked it. I assume it's set post-series, as it all fits that way. Because Yin has supressed emotions her 'small gestures' mean alot, and I think that got brought out in this. It can be interpreted either way, personally I think your's is Friendship with a hint of 'hidden feelings' or maybe I'm being wishful. Either way, good story, nice, short, effective.