The current captain of the group, Sugai Yuuka is also known as the "Ojousama" (lady/princess) because of her privileged upbringing. She loves horses and was a member of her university's Equestrian Club, where she participated in tournaments before she entered Keyakizaka46. Yuuka is now the special ambassador of Japan Equestrian Federation, and has been for 3 years straight. She's also known to have a bad enunciation and cannot say certain words properly, like "fondue" and "captain". A self-proclaimed "do-M" (masochist), the members often love teasing Yuuka. Her catchphrase "Ganbariki," which comes from "Ganbare" (doing one's best) and "Bariki" (horsepower), is popular among members and fans. Yuuka calls her fans "barizu."

日本のアイドルであり、女性アイドルグループ・櫻坂46のメンバーおよび同グループのキャプテンである。東京都出身。Seed & Flower合同会社所属。身長165cm。血液型AB型。