That night I walked the coastline until the city lights dissolved into the open ocean. The tide smelled like old coins. Someone had written a small, chalked message on the seawall: "Yuko — 4/12, midnight." The date had passed; the chalk had run with the rain. But beneath the smudged letters, a name looped into graffiti: "K." I had no idea who K was, but it was a new thread. Records of Yuko's family were sparse. She had grown up in a small fishing town north of the city, according to a brittle newspaper clipping about a youth arts festival. The festival photo showed a child with an earnest face and hands smeared in clay. There were notes about scholarships and a scholarship declined. She had chosen the city, curiosity in one hand and a suitcase in the other.