This page contains information about the YSS Aeon II.

In YE 42, Taisa Ise Katae updated the ship's emblem upon the start of construction upon the 409A. She refined the emblem giving it a more modern appearance. It kept certain aspects such as the ship's image set in a star field that the original Aeon had explored.

The ship unlike the majority of the Plumeria series is not named after a plant.

YE 41

• Construction of the Aeon II was done at Libra Star Fortress to replace the original Aeon. Taisa Ise Katae requested that the new ship maintain the original IRN, however to avoid confusion the ship's IRN was modified with a suffix of A NG-X1-409A.

YE 42

• The YSS Aeon II, NG-X1-409A is the second ship to bear the name. The Aeon II is a new Plumeria-Class 2E. Taisa Ise Katae has been overseeing the construction and is now readying the ship for service. Her first challenge is to gather a crew like the one she had on the original Aeon. Once she gathers crew the ship will be taken out for shakedown and training. Then the NG-X1-409A will seek out the enemies of the YSE.