"Secret Bud" is a Japanese cartoon, written by Mineiro. The story takes daily life as the starting point, with a little exaggerated elements and love plots, and narrates the protagonist's physical and mental growth as the axis. It was adapted into an animated version. Secret Germination is a sex education book for primary school students, originally designed for senior primary school students. Since 2004, it has been serialized among four-year-old pupils and five-year-old pupils. At present, three singles and special issues have been published, with a cumulative distribution of 550,000 copies. However, since its launch, it has been inexplicably loved by many otaku (correctly speaking ……), so it has been adapted into a three-volume OVA animation in line with public opinion. OVA will be released on April 25th, May 30th and June 27th, 2008 respectively. Recently, in order to build momentum for sales, the government has publicized gorgeous seiyuu, character setting and a large number of maps. But before that, we have prepared a short story for you, please read it-