A collection of seven standalone short stories, each following a grown man who unexpectedly encounters a fragment of his childhood. The settings range across contemporary Japan: a Tokyo pharmaceutical salesman befriends a charismatic stranger and introduces him to a mother-daughter pharmacy; three old friends driving to a countryside folk-craft shop get lost in the very mountains where they once played as a five‑some; a cautious electric‑company employee keeps ignoring letters from a former classmate turned professional wrestler; a middle‑aged ex‑Little League star struggles to connect with his baseball‑obsessed but unskilled son; two would‑be kidnappers target the daughter of a real‑estate tycoon, only to discover the girl’s mother was their elementary‑school classmate; a burglar with a peculiar childhood talisman breaks into a house whose layout he inexplicably knows; and a man transferred back to his old college town finds the sole unchanged spot is a coffee shop frozen in time. Though the plots differ, every story shares a single thread: an adult protagonist forced to measure the person he has become against the boy he once was. Nostalgia, regret, and the quiet ache of growing older run through each tale, but the tone remains gentle and observational rather than sentimental. There is no overarching continuity—each chapter is a complete, self‑contained narrative.