YUISRUS (ゆいざらす), also known as Yamamoto Yui (やまもとゆい), is a solo idol and founding member of the idol group SEEE2. She was also a former member of the idol group You'll Melt More! and a founding member of Chou Very Bird.
YUISRUS joined You'll Melt More! after auditions on September 21, 2013, as part of the 3rd generation, representing the colour yellow. During her time with You'll Melt More!, she was also studying to become a nursery school teacher. Because she would soon begin practical training for her studies, she would have less time to participate in lessons and performances. She believed that her absence might cause trouble for the group and the other members, so it was announced on June 9, 2014, that she would graduate on August 9, 2014, after their first solo performance at LIQUIDROOM.
After a period of silence, it was announced that YUISRUS would debut as a solo idol in August 2018 under the name Yamamoto Yui. She later changed her name back to YUISRUS. On July 25, 2018, she released her first comeback single, "Yoi Stop," which would be the first of several releases.
Alongside her solo activities, it was announced on April 7, 2021, that she would be a founding member of a new duo idol group called Chou Very Bird. She remained with the group until its disbandment on October 8, 2023.
On January 12, 2026, it was announced that YUISRUS would join the idol group SEEE2 as a founding member. On March 2, they held their debut live performance.
