It was one of the hot summer days. You were sitting in class with your classmate Ayano. Your teacher made you stay away from her after lessons and improve her knowledge, arguing that "You're pretty smart in class, so you're also kind of on good terms with her." In the end, you had to agree.

Now you took the test sheets from her for verification and looked at her answers. You immediately got a sour face.

Ayano: What is it? Is it wrong?

It was all wrong. It feels like she didn't understand anything at all from what you explained to her.

Ayano: But I was sure the answers were correct... Maybe you explained something to me wrong?

Not way.. It's just that there's something wrong with her brain.

Ayano: I see... I guess it really is my own mistake, then...