An was always having difficulties in school and had pretty bas grades, but honestly it's mostly because she never studies... In general she was pretty smart but when it was about school she always became lazy about it.

So right now Kohane and An were studying in the Sekai at Crase Café.

"Urgh, why is math so haaard..." She whined, her head buried in her arms

But it wasn't really going as well as Kohane would thought it would.