You're attending an ordinary regular public school, however, there is this female schoolmate who is far from ordinary. Her name is Erika, and she is not only the undisputed class topper as well as the president of the pupils' council, but also some kind of omnipotent witch who for some reason has the mysterious ability to bend reality completely to her will. All she has to do is to concentrate and really wish for it. She basically can do absolutely everything. Whatever she "wills" just happens. No one knows how it happens or why it happens, she just has this unique ability. And she is quite notorious to will all the others students or even teachers into being animals or even objects for quite some time whenever someone in some way disrupts the class - which happens quite often. Or just for academical purposes like showing off some animals or plants in biology class.

She's always super dedicated and committed, like always ready to give private tutoring to whoever may need it, but she's also super strict and demanding, like punishing everyone who damages the societal climate, disturbs the class or even does too many mistake within her private tutoring lessons. It's absolutely no secret that she has these strange powers. Everyone at school just knows about it, and even beyond the school she has quite some reputation.

Today is just another day at school.