Madame President the Vice-Presdient here with the weekly manga review.
This week the manga will be Gundam Seed Astray
This Manga takes place during the events of the Anime and manga of Gundam Seed. If you watched or read either of those then this is still a new story. A new cast of characters who also end up with some Gundam models and fight during the same war.
If you like Mecha, it's a good enough manga. It has a few sequels just like the Anime. They see some of the events of the main series. Anyone who liked the anime should read this for some expanding into the world as a whole.