While the 1997 anime followed the manga closely, Kentaro Miura's own rough drafts (often called "Name") for the Golden Age arc served as the ultimate source material. Rough drafts for various chapters, such as Chapter 117 or the "Lost Children" arc, have occasionally been released through Young Animal magazine or exhibitions.
In 2020, a Berserk exhibition released booklets containing original storyboards for episodes 360–362 to backers, providing a rare look at the series' planning process.
This is the ultimate "draft piece" for the entire franchise. It is a 48-page standalone story Miura wrote while in college, serving as the basis for what Berserk eventually became.
In the context of (the 1997 anime adaptation of the Berserk manga), "draft pieces" typically refer to production materials used to bridge the gap between Kentaro Miura's manga and the final animated scenes. Types of Production Drafts