For a visual step-by-step, many creators on YouTube offer printable templates to make the process more precise.

: Tape a long wooden dowel to a base layer of cardstock to ensure the paper doesn't bend.

: Wrap a strip of black paper tightly around the base of the dowel to form the handle. Add small silver strips for the decorative "ribs" seen in the anime.

: If you're looking for the source material, this volume covers the middle of the Alicization arc. Part 2: DIY Paper Prop — "The Elucidator"

To address your request, I've broken it down into two parts: a guide for watching the relevant " Sword Art Online " content and a "paper" (creative guide) on how to make a 3D prop sword from the series using paper. Part 1: Watching "Sword Art Online 12"