JoJonium

JoJonium (ジョジョニウム) is a large-format special release (commonly referred to as  in Japan) of the first three parts of the JoJo's Bizarre Adventure manga (Phantom Blood, Battle Tendency and Stardust Crusaders), stylized as a "Favorite Edition" (愛蔵版) and "Boxed Edition" (函装版) in the package.

Summary
This re-release comes with extra content such as character redesigns, new cover illustrations and color pages not included in the tankōbon release. The end of each volume includes notes from Araki discussing the creation of the characters and covers.

Each volume is printed in A5 size format (148.5 × 210 mm or 5.83 × 8.27 in) on high quality paper.

The release of this edition started with two volumes on December 4, 2013 and was periodically released through 17 volumes with a release span of one volume per month.

An English edition of the first volume was released digitally by VIZ Media on September 12, 2014 and was physically released on February 24, 2015.

Trivia

 * Each volume comes with a special slogan on the cover's promotional flap, written by the winners of a contest held on the official JoJonium website.