Dai Koyamada has made the first ascent of Kawaki no umi, ~8B+/C, at Minamata on the island of Kyushu in southern Japan.
I was able to climb the line which I discovered in Minamata, Kyushu Japan last October.
It's a very beautiful 7m high line with 17 moves.
I think it's probably between 8B+ and 8C.
I named the line "Kawaki no umi" [Sea of dry].