Mobile Suit Gundam: Day After Tomorrow - Kai Shiden no Memory yori

Kidou Senshi Gundam: Day After Tomorrow - Kai Shiden no Memory yori
機動戦士ガンダム デイアフタートゥモロー ―カイ・シデンのメモリーより―

Prequel

Kidou Senshi Gundam Unicorn
Kidou Senshi Gundam Unicorn Bande Dessinee· 機動戦士ガンダムUC バンデシネ
manga

Set 3 years after the events of Char's Counterattack, a young man is caught in a deadly conflict between the Earth Federation and Terrorist Organization "The Sleeved" as they battle for an object that is said to have changed the course of Human history. The title page of the first chapter announces "A new story different from the anime and novelization is born!"