According to Sunrise producer Naohiro Ogata, while the novel was written as a sequel to Tomino’s 1988 novel Mobile Suit Gundam Char’s Counterattack – Beltorchika Children (based on his rejected first draft for the 1988 film Mobile Suit Gundam Char’s Counterattack), the upcoming anime will be produced as a sequel to the Char’s Counterattack anime film.
In addition to depicting the battles of Ξ Gundam and Penelope, Quess Paraya from Mobile Suit Gundam: Char’s Counterattack makes an appearance.
The trilogy is based on Yoshiyuki Tomino’s Mobile Suit Gundam: Senkou no Hathaway / Hathaway’s Flash novel published for three volumes from Kadokawa Sneaker Bunko from 1989 to 1990.