Hane Yasumasa, 9p on KGS?

Japanese user "yasumasa" is 5-dan only on KGS,
but he is undefeated in even games.
I checked some of his games and I am sure, that he can reach 7-8 dan level easily.
But I don't think that he is the legendary Hane Yasumasa, 9p, Hane Naoki's
father, who was one of the best players in Japan in early 80's.
Here is the game won by "yasumasa" against 6d. No chances for White at all in
that game.