Yokoya makes his entrance in Round III as a man consumed with domination. Dark-haired and unnervingly calm, he's known for carrying mice around with him—a habit that contributes to his unsettling presence. Nao picks up on something off about him immediately, and Nearco later confirms what many suspect: he's Akiyama's true rival.
His introduction to the game is shady from the start. He substituted in for another player during the Revival Round, and from there, things escalated quickly. The eight other participants hatched a plan to vote him out by pooling their support, but Yokoya had already secured everyone's loyalty through bribes—he pulled all 80 votes in the first two rounds. Then he played his real card: selling his excess 29 votes back to the group, bleeding them dry. By the time he was done, every player except his most devoted follower was buried under 200 million yen in debt to him.
With that kind of leverage, Round III became his playground. He essentially established a dictatorship among his teammates in the Northern Country, controlling the game through fear and financial manipulation. He'd originally planned to cash out and leave after Round III, but Nao managed to provoke him into sticking around for Round IV instead.
Content compiled by AnimeList.moe from publicly available sources.