Tên: Naisho no Tsubomi
Tâp: 3
Năm: 2008
Thể loại: học sinh, hài,

Nội dung:
Naisho no Tsubomi tells the story of Tsubomi Tachibana, a fifth grader dealing with issues such as her mother's pregnancy, her first period and the strange feelings she has started to get when she has been around boys.

Based on a shoujo manga by Yabuuchi Yuu, serialised in Ciao.

(Based on a popular manga series, this has been described as being a 'sex education story' for young teenaged girls. Its true-to-life and even tempered approach to issues of young adulthood and budding sexuality have not only garnered the attention and respect of the Japanese manga community, but with parents as well.)