Amate Yuzuriha, a high-school girl living in the Izuma colony, meets a female courier named Nyaan.

A super unicum known as the "Witch," who shot down over 100 enemies during the One Year War, enters the Clan Battle to settle an old score with the Red Gundam. Seeing this Witch, who clings to mobile suit combat even at the cost of abandoning her husband and child, Machu witnesses the depths of human obsession.

Machu plans to earn money in the Clan Battle and travel to Earth with Shuji and Nyaan. However, on the day of the Clan Battle, Machu is caught by Xavier. At this rate, the trip to Earth will remain just a dream. At that moment, Nyaan…

Annqi discovers Shuji’s hideout. Information about the Red Gundam is worth more than any Clan Battle prize money. Machu finds out that Annqi schemes to sell that intel during the Clan Battle. Earth Federation forces’ intelligence agency finds out about Kycilia’s top secret information decides to…

In the final stages of the One Year War, the Sodon Fleet led by Char launched to stop the Earth Federation forces' operation to drop Solomon Fortress; to protect the lunar city of Granada. Five years later in Granada. Nyaan was there with Kycilia.