Ok so where should I start first lol, I'll type whatever I feel about this manga without spoiler. Well the manga is based on the video but changed up. Some char drawn in the manga are not in the video game. They did not introduce Natsume who join the team later in like Chitose for GA1.

There so much I can say what I wish manga could have done (include good Noa) I love the manga a lot but the GA1 is the best for me. I don't like Kazuya compare to Tact. They don't even show much of the old char from the GA1 and was very disappointed in that since the story takes place a few years later and would like to see how much they grown (princess Shiva). The manga has a lot of more fanservice+ then GA1 lol.

As for the anime...don't even compare. Broccoli was in charged of the anime this time since Madhouse Bandai Visual (who worked on the other GA anime) was to busy at the time with other project to work on GAII at the time (death note anime etc). A big disappointment, Broccoli should had waited.

Broccoli USA closed down(probably due to that stock crash back in US 2009 effecting company and closed half a year later after that.) just before vol 4 was published. One of the staff was keeping update on a blog and was going to tell if anybody would pick up the manga but seem to have abandon the blog a year later. Broccoli USA also flaw as not publishing the artbook in English language and the missing other manga and side story manga ):<.

In all even with the flaw I still love the manga story for it's humor, art style, etc.