She loves bananas! The aho-girl, Hanabatake Yoshiko, who doesn’t care if she can’t do her studies at all, starts yet another day at school. Her carefree actions of idiocy seems to not only cause trouble for her childhood friend, A-kun, but her classmate, Sumino Sayaka, as well.

Yoshiko and friends arrive in Izu Atagawa, change into their swimsuits, and head straight for the waves. The disciplinary committee president tries to flaunt her precious rack, but fails and is buried in the sand as punishment by Yoshiko. Yoshiko goes on rampage and buries Sayaka as well, and starts sculpting some ------- and a ***** on them too!

Emura Akane, Shiina Kuroko, and Hiiragi Himeko are hanging out in the classroom after school when Yoshiko sets her sights on them. The girls, completely unable to read Yoshiko's behavior, get roped into playing with her. They agree to play hide and seek in order to escape Yoshiko, but then...

Yoshiko goes out for a walk with her dog. But their walk is no simple walk. Yoshiko rides on her dog's back, and eventually they reach the mountains. A race breaks out between Yoshiko and her dog traveling at unprecedented speed and the legendary rider of the peak. Who will be the victor?

Yoshiko finds her soldier, Ryuuichi, in tatters. Yoshiko asks what happened, and he responds that he was done in by guys who have wasted bananas. Yoshiko stands silently, anger boiling up from within. They are unforgiveable! I shall fight! Yes! For bananas everywhere! ...wait, bananas?

Ten years ago, Yoshiko met Akuru. Childhood friends, the kid next door, the old cliché story, shattered into a million pieces with the tragedy which unfolds. Young Akuru seeks the power to defeat Yoshiko, surpassing his limits out of fear. What is born in the young Akuru's heart?