For those of you who enjoy historical action novels, or are fans of attack on titan, I recommend you read this book. There are three novels in the series with a diverse story.

It tells the story of a cult of wall worshippers, or about children called "titan children" born from titan bodies, and the history of the 3D maneuver, which is attack on titan's signature weapon.

The attack on titan before the fall series wasn't aired as an anime, so many fans might not know about it. So, I recommend you read this, and i'm sure you'll enjoy the entire series😁✨