J-Drama Pilgrimage | 最高の離婚 — Oi Racecourse, Mitsuo's Sales Call

In episode 1 of 最高の離婚 (Saikou no Rikon / The Best Divorce), broadcast on January 10, 2013, Mitsuo Hamasaki is shown going to a racecourse on a sales call. The nationwide filming-location archive identifies the real location as 大井競馬場 (Oi Racecourse / Tokyo City Keiba) in Katsushima, Shinagawa, and the production credits list TCK Tokyo City Keiba among the episode's filming cooperators.

The venue returns later in episode 9, when Mitsuo and Akari Uehara go to the races together, making it more than a one-off background. That recurrence fits the drama's habit of using ordinary Tokyo places to expose shifts in the relationships among its four leads.

Oi Racecourse is still an active public racing venue at 2-1-2 Katsushima. The stored coordinates identify the racecourse complex rather than a particular grandstand seat, paddock position, actor mark, or camera setup. Current access and race-day entry conditions can vary, so pilgrims should check Tokyo City Keiba's current information before visiting.