Attack on Titan: Beginning

Attack on Titan: Beginning (進撃の巨人 Beginning) is a booklet bundled with a special edition of Volume 34, available only in bookstores. It was written and illustrated by Hajime Isayama.

The booklet contains the drafts of the first two chapters of the Attack on Titan manga.

Kodansha USA decided to include each chapter of this booklet at the end of each volume of The Best of Attack on Titan: In Color.

Contents
These drafts were pitched to the  editorial department, which approved them for serialization. However, Isayama later changed drastically the contents of said chapters in their final version, deciding to start the series at a previous point in the story.