Ryōko Sakaki

Ryōko Sakaki is a 92nd Tōtsuki Generation student and a resident of the Polar Star Dormitory. Ryōko has long purple hair going down to her waist with split bangs that reach her chest and has orange colored eyes. She has a slender body figure and a large bust. She wears a standard Tōtsuki uniform depending on the season. She wears a pure white chef's uniform when she cooks.

Ryoko is a gentle and kind member of the Polar Star Dormitory. Compared to her more eccentric dorm-mates, Ryōko is much more level-headed and mature, responding to most situations in a calm, collected manner. She has a tendency to comfort and assist others when they are troubled or upset, namely Yūki Yoshino. Many have likened her to a "big sister" type of personality, mainly some of the female students, who affectionately refer to her as ane-san (lit. Big Sis). Ryōko was born to the Sakaki family which owns a well-known Kōji and fermented good shop. Ryōko eventually applied and was accepted into the middle school section of Tōtsuki Culinary Academy. Later she applied and was granted a room in Polar Star Dormitory. She became friends with her fellow 92nd Tōtsuki Generation residents Yūki Yoshino and Megumi Tadokoro and the trio would sometimes practice cooking together. Eventually, she completed middle school and entered into the high school section of Tōtsuki Academy. Ryōko, together with Yūki and Megumi, was present at the 92nd Generation Orientation Ceremony and heard the speeches delivered by Senzaemon Nakiri and Sōma Yukihira. After the event, Ryōko and Yūki noted that Sōma's demeanor was needed in order to survive in the academy. She then noticed that Megumi was missing on their way to class. Afterwards, Ryōko was cooking together with Yūki for a class assignment.

After the first day of school, Ryōko returned to the dormitory as the newest Tōtsuki transfer student, Sōma Yukihira applied and was granted a room. Later that night, Ryōko and some of her fellow dorm residents gathered in Zenji's room to welcome Sōma into the dorm. Eventually most of the residents who came to the party had fallen asleep, but Ryōko and Yūki Yoshino woke up just as Sōma completed a dish for a duel issued by Satoshi Isshiki, a second year Polar Star student and the 7th Seat of the Elite Ten Council. Ryōko and Yūki is briefed by Shun Ibusaki about the cooking duel. He presented a bowl of his Revamped Mackerel Onigiri Chazuke to each of them. Ryōko was astounded by the juiciness of the mackerel, though she nor Yūki did not know how Sōma could have achieved this texture through broiling. Satoshi explained that he used the French technique, Poêlée, much to the surprise of Ryōko, but even more so that Sōma himself did not recognize the cooking term. As they finished the dish, Ryōko watched as Sōma had earned Satoshi's respect. The next morning, Ryōko and the rest of the residents entered the dining hall to find Sōma there, ready to challenge Satoshi for his 7th Seat. Satoshi denied the challenge, explaining to him the basics of the formal cooking duels in Tōtsuki, the Shokugeki. Sometime after Sōma's first Shokugeki, Yūki gave Sōma a tour of the Polar Star garden. Ryōko in the mean time was busy working in her personal Kōji workshop. Shortly after, Ryōko and the rest of the first year residents received the news of the first roadblock in the Tōtsuki Academy's student whittling process, the Tōtsuki Friendship and Rapport Training Camp. After Satoshi recalled hearing about a previous year when half of a generation was eliminated from this notorious camp, Ryōko and the other first year residents began to worry, save for Sōma. Sōma told them that they have to be in the half that passes the camp. With some encouraging words from Satoshi, everyone calmed down and was more fired up for the camp.