There was a small section in a recent issue of Jetstar Magazine (Australian-based airline) which mentions a few:-
http://www.jetstarmag.com/story/out-about/1612/1/It was a short list from "Drinking Japan, author and photos Chris Bunting, covers 122 of Japan's best bars, plus the history and culture of Japanese sake, shochu, awamori, beer, wine and whisky. ISBN: 9784 8053 10540 AU$27.99 (Tuttle Publishing, 2012)."
His list, in case the link doesn't work:-
CHRIS' TOP FIVE WHISKY BARS:
1 Shot Bar Zoetrope is quite simply, the best place to explore the nation's drams. Owner Atsushi Horigami shares his passion for the movies, with a large screen at the end of the bar showing silent movies on a continuous loop. 3rd Floor, Gaia Biru Number 4, 7-10-14 Nishi Shinjuku, Shinjuku-ku, Tokyo, tel: +81 (3) 3363 0162.
2 Nikka Blender's Bar, owned by Nikka (one of the two main Japanese distillers), offers an unrivalled range from their Yoichi and Miyagikyo distilleries. It has an unintimidating vibe and also offers tasting sets for beginners. B1, 5-4-31, Minami-Aoyama, Minato-ku, Tokyo, tel: +81 (3) 3498 3338.
3 Quercus Bar might not be the most celebrated of Tokyo whisky bars but landlord Atsushi Watanabe's unpretentious approach ensures a friendly atmosphere and reasonable prices. He has some great Japanese whiskies as well as excellent drams from around the world. Ókuma Bld.B1, 1-32-5, Higashi-Ikebukuro, Toshima-ku, Tokyo, tel: +81 (3) 3986 8025.
4 The Mash Tun is known for its impressive 350-plus stock of some of the world's finest bottlings and the regular turnover of its stock. 2-14-3 Kami-Osaki, Shinagawa-ku, Tokyo, tel: +81 (3) 3449 3649.
5 Júsó Torys Bar is a piece of Japanese whisky history. It's part of a chain set up by the Suntory distilling company in the 1950s that made whisky the iconic drink of the Japanese salaryman throughout Japan's economic miracle years. 1-2-7 Júsó Honchó, Yodogawa-ku, Osaka, tel: +81 (6) 6301 4826.
Enjoy your Whisky!