Fortunately for Mithrandir, Ken wasn't using his earring's effect, else he wouldn't even be able to tell where Ken was.
WHOOSH-!
TING-!
Before Mithrandir regained his bearings, Ken struck and the former could only defend purely out of instinct, he had honed in life and death situations.
BLING-!
BING-!
DING-!
From the front and from the sides, a slash followed after another quickly began to corner Mithrandir, who could hardly follow after Ken's shadow which had only gotten harder to keep up with since it was still night, hence Mithrandir could do nothing but defend against the offence.
But,