gundam_uc_0096:_last_sun
Mobile Suit Gundam U.C. 0096: Last Sun is a GUNDAM manga sequel to Mobile Suit Gundam U.C. 0094: Across The Sky (2012) illustrated by Katsumoku.
It was officially launched in Gundam Ace magazine first in December 2014, continuing in its February 2015 issue and later ending in August, 2017.
Although sometimes promoted as a side-story of Mobile Suit Gundam Unicorn, the story is independent of it, though several MS from that series make an appearance.