It’s the day of Rei’s match against Shouichi Matsunaga, a 65-year-old who’s been a professional shougi player for 40 years. Rei braces himself to battle a man who’s been playing for more than twice the years he’s been alive. However, once the game begins, it seems like Matsunaga is making random moves, which makes Rei’s job even tougher. After the match is over, though, Rei gets sucked into having dinner with Matsunaga…?