chronicler's cipher

Cartoon bad or bad at being bad boys :)

GF fandom hear me out

So this is a book i read like 2 years ago. Listen:

-Its about a group of twins and their big sister finding a book about magical creatures.

-The book is an old hand-written and illustrated book with information on different types of magical creatures written by a mysterious author. 

-The main villain is a mastermind that wants to destroy everything. 

-They find help with an old member of their family who knew about the monsters and the author.

-In the end its revealed the author of the book was their great grandfather who accidentally stepped into a place where time didn´t pass,so when he came back it had been like 5 days for him and more than 30 years for the rest.

Now

why

does

that

sound

familiar?

Also,the main character in that book is basically Dipper.

Look im not saying Alex ripped this book off  but you cant deny the similarities. Maybe he was inspired by this somehow?