Just when Rei thought he found a happy place within school, that place begins to disappear. Meanwhile, Shimada has a match against Gakuto Sakurai 7th-Dan, as they vie for the right to challenge Yanagihara, the venerable reigning Kishou champion.

On the way back home from their commemorative match in Morioka, Rei and Souya are forced to stay in Sendai for a night because of a typhoon. Rei is relieved after they find lodging, but soon gets a phone call from Chairman Jinguuji, who tells him a certain secret. Meanwhile, Nikaidou is out of the hospital and ready to make a comeback in the first qualifying round of the Jeweled King Tournament.

Hinata has been coming up with new ideas for sweets one after another all throughout summer vacation, but struggles to focus on her studies and deciding which high schools to apply to. Rei decides to invite the three Kawamoto sisters to some nagashi somen fun at his school. When Hinata meets the members of Noguchi's Shogi Science Club and Hayashida, she begins considering Komahashi High, Rei's high school.