Kaluxung has been climbed twice. [...] First by a Japanese team in 2005 [...] The second ascent was made by Bruno Tibet in 2007 via the same route[...]
I found the report from the Germans who made the second ascent in 2005, but eroneously called the peak Jetung Chusang. This means that the peak has been summitted at least three times.
I added a new chapter in the Kaluxung main page, and partly translated the expedition report from the Germans. It gives more information on both Japanese and german ascents.
Thanks. I had never heard about the German ascent. I'll add the info.