The System Makes My Life Better

A Magical World Where the Protagonist Attacks Other Empires From the Frozen North

Looking for Books Suitable for Eighth- and Ninth-Graders to Read ᶻz ₍^_ ̫ _^₎

I'm in my second year of middle school and looking for books about studying or literature. Any subject is fine, as long as they're easy for middle schoolers to understand.

Are There Any Books Written by Minors?

I'd like something like "The Diary of Sima Yan, an Elementary School Student". I really want to read about underage characters. I'm a little bored.