Ryuichi Murai is at the top of the bouldering world these days. Last month, he made the first ascent United V16 in Japan and paid a visit to the famous Cresciano, Switzerland, last week.

He made quick work of two classics in relatively quickly: Dreamtime V15 and The Story of Two Worlds V15. So far, 25-year-old Murai has done 12 problems V15 or harder. “I took about two hours to send Dreamtime,” he said.

“First, I practiced each moves a few times. Then on my fourth try from the start I climbed it. The first part of this line was especially hard with a crux a dyno in the middle.” Watch his first ascent of United below.

United V16