Acheron

Acheron was a planet where at first it was considered to be partially developed. Acheron was initially green, but after the Acheron Nightmare, it become red and inhospitable.

Acheron was the birthplace of the ADAN Freedom Alliance, where they tried to overthrow the Terra Central Government, But failed.

Acheron was also the location of Major Margras Mason’s hometown.

Eventually the Acropolis and her crew stumbled upon Acheron and was attacked by the Night Ravens, but escaped with some casualtie, including Major Raymond. It was also there that Katana Faraway was told the truth of the Acheron Nightmare by Margras.

It was seen in the ending scene where it‘s green color was restored