Shiba Inuko-san is no ordinary middle school student – she's a dog, but not many people seem to notice! Alongside her friends and classmates Chako and Naporin, Shiba Inuko experiences the joys of daily life such as learning the proper technique of using chopsticks, horoscope woes and epic battles of skill in physical education class!
Ten-year-old genius Chiyo, animal-loving Sakaki, loudmouth Tomo, athletic Kagura, weight-conscious Yomi and dim-witted Osaka are six friends who share laughs, good times, and a high school homeroom. With scary (and sometimes perverted) teachers, school festivals, penguin suits and general hilarity abounding, you can be sure that there's never a dull day in the life of one of these students!
Once a popular all girls' school, Ousai Private Academy is now co-ed due to declining birth rates. Takatoshi Tsuda, a boy newly attending Ousai solely because of the proximity to his house, is quickly forced to become the student council vice president and male representative of the school by president Shino Amakusa. Now looked upon as nothing more than a filthy pig by his female peers, Takatoshi must cope with learning about a whole new side of the opposite gender, hearing plenty of dirty sex and period jokes along the way!