Shino is a second-year student at Ousai Academy, and also the student council president.
Shino gets Tsuda to carry her during her time of the month.
Due to her position as student council president, and her diligent lifestyle, Shino has quite a fan following in the academy. Many of the girls go to her to seek advice, although this is not always the smartest thing to do. More often than not, Shino shows a tendency for being extremely perverted. Innocent conversations can take a dramatic turn in the presence of Shino.
Many of Seitokai Yakuindomo's jokes are based around her perverted sense of humour.
She's quite open about her interest in Tsuda, which is reflected in many of her questions, although most of them appear to be through her sexual curiosity.
Shino appears to have a complex about the size of her breasts, despite her popularity. In one of the episode openings, Shino states that it is a school rule to not talk about breasts.