Origin
Japan
Kotomi Tsuda (in Japanese Tsuda Kotomi) is the younger sister of Takatoshi Tsuda, who she affectionately calls "Taka-nii". Like her brother, she ultimately ends up attending Ousai Private Academy because of its proximity to home. She is considerate and caring toward others, but is curious and extremely (Takatoshi would say embarrassingly) enthusiastic about adult matters. She is easily one of the most nonsensical characters in the series, and rivals Shino Amakusa, Aria Shichijō and possibly even Naruko Yokoshima as one of the most perverted. [Source: Seitokai Wikia]
Seitokai Yakuindomo
On his first day of high school at the formerly all-girl's Ousai Private Academy, Takatoshi Tsuda is called out for his untidy uniform by the student council president Shino Amakusa. In apology for delaying Takatoshi for his first class—and stating that the group needs a male point of view to accommodate the arrival of boys at the school—Shino offers him the position of vice president of the student council. Though unwilling, Takatoshi finds himself appointed as the newest member of the student council having yet to even step foot inside the school building. Takatoshi soon realizes that the other student council members who are more than a little strange: President Shino, who is studious and serious in appearance, but actually a huge pervert, fascinated with the erotic and constantly making lewd jokes; the secretary Aria Shichijou, who may seem like a typical sheltered rich girl, but is just as risque as the president, if not more so; and finally, the treasurer Suzu Hagimura, who may act fairly normal, but has the body of an elementary school student and is extremely self-conscious of it. Surrounded by these colorful characters, the new vice president must now work through a nonstop assault of sexual humor and insanity.
