Kana, a woman teacher who is passionate about education. One day, Nakata, a male teacher who disregards Kana, invites him to drink tea with diuretic ingredients in order to make Kana taste better during class. One after another, all the men in school are going to be jealous of Kana who have been detained during class as Nakata expected! Omorashi will eventually turn into a pleasant tides ....