This post is for numisma, because she asked me for a rundown of the best TezuRyo fics out there. She had asked for non-WIP Classics to start with. That pretty much rules out "Focus" over on FF.net and Jumpy Boys, which is probably everybody's favorite TezuRyo WIP.
I think it's safe to say that our ship was pretty much a non-ship until about a year ago, so the "classics" aren't necessarily things I'd rec if there had been anything better out there at the time. I've heard people call us the 'second wave' of TezuRyo or something, but dude, there just wasn't that much out there before this time last year.
That said, the one fic that's generally considered a "classic" older TezuRyo fic that I would rec is Branch's Yaru Arc. I don't, however, think it stands up too well over the test of time. I wouldn't put it in a class with any of the fics I'm about to rec, purely for that reason, along with personal preference. There's also one really well-known fic that was recced all over old-school fandom that ends in the line "Tezuka thinks about investing in a new pair of sunglasses." I can never remember the name of this fic and I didn't really cotton to it all that much, but it's somewhere in my memories, which I really need to organize by pairing.
Anyway, here we go.
A Purely Subjective List of My All-Time Favorite TezuRyo fics:
Other Not-to-be-missed All-Time Favorites:
I think that should get you started. There are hundreds more, when you're done with those, in my memories.