Yoshiki has light-colored hair, small pupils, a slightly wrinkled face and sports a business suit with a tie.
As a food critic, Yoshiki is knowledgeable about culinary arts and, as a judge, would express great appreciation towards a well-cooked dish.
Main article: Introduction Arc
Yoshiki makes a brief appearance by being one of the three judges who were involved in judging both Sōma Yukihira and Ikumi Mito's dishes in their Shokugeki. He alongside the other two judges, Shigeno Kuraki and Katsunori Okamoto, tasted Ikumi's dish first and gave praise, further citing that Sōma's cheap beef would never beat Ikumi's dish which utilizes A5 meat, the highest grade meat. Yoshiki further states, that Sōma's dish would realistically never beat Ikumi's dish, as Sōma only used cheap Chaliapin steak beef.
However, as Sōma presented his dish, they held back their decision, stating that Sōma's dish looks better than expected. After tasting the dish, all three judges ate the dish unhesitatingly without stopping and only ate half the portion of Ikumi's dish, deciding the winner of the match. Yoshiki also claimed that he'd get hungrier if he ate more because of the refreshing aftertaste produced from the picked plums mixed within the dish. After finishing, the judges gave their votes to Sōma, giving Sōma a one-sided 3-0 victory.