Aho Girl

Yoshiko Hanabatake can somehow score a perfect zero on almost any test and treats her love of bananas with far more seriousness than school or her future. Her childhood friend Akuru "A-kun" Akutsu has no patience for her nonsense, so he constantly tries to stop each disaster before it spreads to everyone nearby. The problem is that Yoshiko never learns; she recovers from every reprimand only to invent something even worse and somehow drags classmates and new acquaintances into the chaos. For Akuru, maintaining an ordinary day takes far more effort than studying, because Yoshiko herself is the problem for which there is no correct answer.