Gundam Reconguista in G - Season 1 Episode 15 Fly forth! To Towasanga

Megafauna and the Salamandra join forces to stop the fierce attacks by Dorette Fleet. Raraiya explains that the Lunar colony always had the intention to return to Earth. However the " Reconguista" plan did not work out as expected because of differences between the Rayhunton and Dorette families. Also she explains rhe G-Self is YG-111, a Rayhunton developed, but rejected Towasanga army mobile suit. In space Bellri in G-Self equipped with additional back-pack fire power manages to hold his ground and chase of of the attacking mobile suits. Both Megafauna and Salamandra dock at an older space colony in moon orbit. Both ships send out boarding parties to scout the colony, however they end up receiving a different welcome.