Kanzenban (完全版), Release Date: February 19th, 2003
Kanzeban edition is larger (A5) and reproduces the color pages published in the magazine. A kanzenban volume contains more pages, thus collecting more chapters. Kanzenban Volume 3 contains chapters from 18 to 25.
Fullcolor-ban (フルカラー版), Release Date: February 21st, 2014
Fullcolor-ban is a digital edition with digitally full-colored pages.
Shinsoban (新装版), Release Date: August 8th, 2014
Shinsonban edition is usually with new cover and color pages.
Bunkoban (文庫版), Release Date: November 2014
Bunkoban edition is a tankōbon printed in bunko format, or a typical Japanese novel-sized volume, generally A6 size and usually have a new cover designed specifically for the release. It also have more pages, thus collecting more chapters in a volume.