Japanese Bars (similar to Star Bar and Bar High Five in Tokyo)
I don't know of any Japanese or Japanese style bars specifically. If you want a really good cocktail (whether classic or modern) at a place that takes its craft seriously, however, there are some good options around. My top picks (based on places I've been; there are certainly places that I still haven't visited) would probably be, roughly in order:
The Varnish (Downtown)
Tasting Kitchen (Venice)
Tar Pit (Hollywood).
None of these places are a total zoo, *but*, I don't think you'll find the kind of places you find in Tokyo where there are 10 or 15 seats total in the whole bar, and the place is only half-full.
If you haven't already, you should also check out this article from the most recent Imbibe:
as well as this list, and the associated feature:
Sorry if you already know all this and are looking for something more specific.
I was in Tokyo recently, and went to Kazuo Ueda's "Tender Bar", as well as one of his former apprentice's place, and a smaller place that specialized in American whiskey, and while I found the drinks excellent in Japan, I don't think the difference is anywhere near big enough to justify a 12 hour flight just for a drink. The style is slightly different, and I appreciate the attention to detail that the Japanese bartenders have, but I have had as good (or better) drinks at places in New York or Los Angeles.
The Tar Pit
609 N La Brea Ave, Los Angeles, CA 90036
Yes. I believe I've recommended them in other threads on here, in fact. I've had good experiences there, especially when I've had Jason Bran making my drinks - I think he's got a great command of classic drinks, is good at reading people's preferences, and makes excellent, well balanced drinks. However, I didn't recommend it in my post above for a few reasons:
1) They let too many people in. The place is quite small, but it tends to get stuffed, even on weeknights. Difficult to get a seat, or even to have a conversation. Obviously, this is a matter of personal preference - maybe some people like the scene there.
2) Experience / quality of drinks isn't as consistent as at Varnish or some other places IMHO.
3) Can be a little on the gimmicky side, what with using stencils to spray bitters on the surface of drinks, over-use of the atomizer to spray absinthe / bitters, etc. Not to mention whatever drink that is with whipped cream on top?
4) The crowd.... it's good people watching, I guess... well I'm not going to say any more on this point, because it probably won't come out sounding very nice. Again, personal preference.
Overall, I do like Roger Room, and if it were closer, I'd probably visit more often, but based on my limited experiences in Japan, I think the 3 places I mentioned are a closer fit to what the OP is looking for.