Yuki is a first-year serving as the Student Council's Public Relations officer. She's Masachika's younger sister and the current heir to the Suou family—a former noble house with a long diplomatic tradition. After their father and Masachika left, that responsibility fell to her as the eldest daughter still at home.
At school, she's one of the most popular girls alongside Alya and Masha, known for being genuine, beautiful, and refreshingly straightforward. She and Masachika are forced to pose as childhood friends to keep their real relationship under wraps, which works in her favor since nobody suspects a thing. She enjoys needling Alisa about her obvious crush on Masachika, and she and Alisa have become rivals—partly because Yuki occasionally gives her a hard time about her Student Council performance.
Behind closed doors around just Masachika and her loyal follower Ayano Kimishima, though, she's a total otaku who loves cute stuff and isn't shy about making suggestive jokes. She's clearly head over heels for Masachika and regularly crashes at his place. She used to deal with asthma as a kid but claims she's outgrown it and hasn't been sick since middle school.
Currently, she's running for Student Council President in the next election, with Ayano positioned as her proposed Vice-President.
Content compiled by AnimeList.moe from publicly available sources.
