Don’t know how recently this happened, but Sushi Samurai has permanently closed on Alki – just noticed the note in the window while walking by for the first time in a while. (Likely relatively recently, as the restaurant’s most recent online review was posted a week and a half ago.) The original Queen Anne location remains in operation, and its website says, “Chef Ray has returned home to Queen Anne!” It’s only been 14 months since the Alki location opened at 2758 Alki SW, which Subway had vacated six months before that.
P.S. As discussed in comments, this now means five spaces are vacant in the heart of the Alki business district – the spaces formerly home to Tully’s, Alki Cleaners, Marée Bistro, Alki Urban Market, and now Sushi Samurai.