Spoiler
It's the 2023 "Human Shogi" event in Tendo City, Yamagata Prefecture.
Of course.
Tendo Ningen Shogi 2025 - April Events in Yamagata - Japan Travel
Ningen Shogi is a “Human Chess” event that occurs every April in the city of Tendo, Yamagata. Set under rows of blooming cherry blossom trees, Ningen Shogi is the most popular activity during Tendo’s annual Sakura Matsuri.
Setup phase for Shogun 2 Total War.