Finally I could manage to do my longstanding project "Epitaph V15"!! I spent 8days to send it. At first I couldn't do at all. But I was highly motivated because the line was so beautiful. I was really happy, but I also wanted to face this beautiful line a little longer.
This was Ryuichi's 7th ~8C, all of which have been climbed within less than 18 months.
Epitaph is a rather short problem and has only eight moves or so. Dai made the first ascent in January 2009 and, at the time, said it was his most beautiful problem ever.