You know the bronze statue at Tokyo's Shibuya Station, the loyal dog waiting for a master who never comes home. But beneath that sanitized fairy tale lies a 90-year legal fight, an 80-year medical cold case, and the harsh reality of life as a chronically ill stray in interwar Tokyo.

This deep dive strips away the simplistic legend to examine the real Hachiko, his owner Professor Ueno, and the complicated humans around them. We explore why the comforting story endures and what messy truths it works hard to hide, from animal grief to abuse to wartime propaganda.

• How a near-dead puppy survived a freezing train ride in a rice bag and why his name simply means eight
• The dark years after Ueno's sudden death, when the Koseki registry left his common-law partner Yaeko with no rights and Hachiko on the streets
• The relentle ...