In reply to Mowglee:
I have really only rock-climbed at Joyama, on the Hakone-Izu peninsula - nice place, nice enough climbing, certainly good for a couple or three days. Rained when in Ogawayama (November IIRC) so I never saw the rock, but all the indications were good, as was the hut.
On a slightly different note, the Japan Alps are excellent, summer & winter. One of the best treks I have ever done was Hakuba to Kamikochi in early October, about a week. A little bit of an insight into both the country & the culture.
Ice Solo, who posts up here occasionally, is locally resident & very knowledgable.
On a whole other note, for rock-climbing in NE Asia - Korea.
Damian
