This is a super Rare Scan of X-Men the Manga. X-Men - The Manga is an adaption of the first 2 Seasons out of 5 from the 1992 X-Men animated series. Each Volume adapts 2 episodes of the series, so 13 Volumes in Japanese. In English it was published individually so that's why it's 26 Issues here, so I assume it's the full Manga. Also every chapter/Issue is drawn by another Mangaka.