Also known as: 機動戦士Ζガンダム
A 2011 Science Fiction manga by Kitazume Hiroyuki. It is part of the Gundam Mechaverse.
Mobile Suit Zeta Gundam Define is a new Comic format retelling of the events from the Zeta Gundam TV anime series from 1985 (of which Kitazume was the main character designer). It features more modern designs as well as new mecha and characters and changes to the original plot.