Yamada Ryu, a second year student who attends the prestigious Suzaku Private High School, is a problem child who comes to school late and leaves early, is prone to fighting all over the place, and even nods off in class. One day, he falls down the stairs with the honor student Shiraishi Urara. They faint, and when he wakes up in the infirmary he's turned into her!
How could I be? Why do I have to be Yamada?
Wie soll das gehen?
¿Cómo podría...? 
¿Qué tengo que ver con Yamada?
¡Qué va! ¡¿Qué tengo 
que ver con Yamada?!
Tu débloques complètement.
Come potrebbe mai essere?
 Perché dovrei essere Yamada?
Como assim?
Como eu seria o Yamada?
Как это возможно? Почему это я Ямада?