When the graffiti writers rocked up to this spot for the first time, they must have been salivating, drunk on the possibilities of the kind of massive tag they could the throw up on the wall. The infamy would be local and ephemeral, a tiny blip in the annals of the graffiti-writing fame game. The spot, a vacant plot of land with a hillside retaining wall in Tokyo’s fashionable Naka-Meguro neighborhood would soon be the site of new housing construction that would forever obliterate the sight lines to graffiti art, if not ensure its erasure. But until then …