Goldfish Warning!

The manga tells the story about 14-year-old girl named Chitose Fujinomiya, who was formerly rich girl, but is currently an orphan who was kicked out of her super-elite school, Tokai no Gakuen (City's Academy), and is shunned by her former friends. She is sent to a rural public school, Inaka no Chugakkō (Country's Jr. High School), where very needy students and even pigs, oxen and chickens are students.

The only possession Chitose has left is a pink goldfish named Gyopi, given to her by her beloved father, and is very valuable. Her family's attorney attempts to steal Gyopi, but is foiled by Chitose's new schoolmates, namely Wapiko, a simple girl who can outrun almost anything and is well-liked in school. As it turns out, Chitose isn't poor; the attorney was merely hiding her inheritance for himself. Instead of going back to her former elite school, she buys the rural school and attempts to transform it into a refined school to compete with her former school but the students of the rural school don't want the school changed.