The cleaning robot trundled off and I went back to the graffiti. Most of it was Amanglic or Spanish, old jokes that I'd seen before in a hundred similar places; Cabron Modificado! and Absent without Sleeve!, the old crack The Altered Native Was Here!, but high on the bench's backrest and chiselled upside down, like a tiny pool of inverted calm in all the rage and desperate pride, I found a curious haiku in Kanji: