The words made no sense at first. Keiko held the scrap to the window light and traced the loop of her name. The ink matched the careful slant she recognized from her grandmother's notes. This was deliberate.

"Seven-twenty?" Keiko whispered.

Keiko had collected small mysteries all her life: train tickets with faded stamps, lost postcards from cities she’d never visited, and a handwritten list of numbers her grandmother called “lucky fragments.” In the back of a cedar chest, folded inside an old vinyl sleeve, she found a single scrap of paper: "1000giri 130614 Keiko 720 — high quality."

The second X took them to a narrow stairwell behind a bakery where seven steps led to twenty tiles set differently—worn by generations of footsteps. Behind the twentieth tile was a hollow that smelled faintly of citrus and old glue. Inside lay a thin wooden box with a single key and a folded photograph: Keiko as a child, holding hands with the woman on Platform 7's map marker—the vanished granddaughter. The back of the photo had a scrawl: 13/06/14.

The bundle contained a ledger, photographs, and a small leather-bound journal. The journal's first page bore Keiko's name in a hand she recognized as the same as the scrap's. The last entry read: "High quality: keep the work precise. The world saves itself one careful act at a time."

"Because her handwriting ends like yours," Aya answered. "Because someone wanted you to find it."

"Not time," Aya said. "A route."

Pier 7 was at the far edge of the port, where the city allowed itself to touch the sea. When Keiko and Aya arrived, a small boat bobbed gently at slipway 20, its bow painted with a character that matched the scrap's script. Inside the boat lay a bundle and a letter addressed to Keiko.