|Kuzuryuu Yaichi九頭竜 八一|
|Visual novels||Protagonist - Ryuuou no Oshigoto!|
|Voiced by||Uchida Yuuma|
Yaichi is a sixteen-year-old who won the Ryūō title match at a young age. He is the current youngest Ryūō. Initially, he was overwhelmed by his title and perceived pressure to avoid playing in a "disgraceful" manner. He has a calm personality and often doesn't take things seriously unless they are related to shogi. He was taken aback by Ai's talent and determination, and the way she continues to fight and seek a way to victory has helped inspire him.